📖 视听背景导读 · Background Overview
从热带海蛇到海洋巨兽：海蛇号与全球潮汐能源革命
海洋覆盖了地球表面 70% 的面积，孕育着几乎取之不尽的磅礴波浪动能。为开采这片洁净无尽的能源宝库，苏格兰工程师理查德·耶姆（Richard Yemm）以热带海蛇为灵感，研发出举世瞩目的“海蛇号”（Pelamis）波浪发电机。
机身如巨型红色长蛇漂浮于浪涛之上，由多节铰接圆柱浮筒构成。海浪使其上下起伏律动，驱动内部的高压液压泵与马达输出清洁电能。从实验室造波模拟、苏格兰严酷开阔水域实战，到2008年葡萄牙首座商业波浪农场并网发电，“海蛇号”为人类彻底摆脱化石燃料依赖开辟了激动人心的海洋航标。
海洋覆盖了地球表面 70% 的面积，孕育着几乎取之不尽的磅礴波浪动能。为开采这片洁净无尽的能源宝库，苏格兰工程师理查德·耶姆（Richard Yemm）以热带海蛇为灵感，研发出举世瞩目的“海蛇号”（Pelamis）波浪发电机。
机身如巨型红色长蛇漂浮于浪涛之上，由多节铰接圆柱浮筒构成。海浪使其上下起伏律动，驱动内部的高压液压泵与马达输出清洁电能。从实验室造波模拟、苏格兰严酷开阔水域实战，到2008年葡萄牙首座商业波浪农场并网发电，“海蛇号”为人类彻底摆脱化石燃料依赖开辟了激动人心的海洋航标。
📜 原版同步字幕台本 (点击跳转指定时间戳)
00:00 - 00:08
In our quest to find new sources of renewable energy, engineers are turning to the ocean,
在探寻新型可再生能源的征途上，工程师们正将目光投向浩瀚的海洋，
00:08 - 00:13
a resource that has one big advantage over all of its competitors.
这是一项相比其他竞争能源具有巨大天然优势的宝贵资源。
00:13 - 00:17
I think we can say that effectively the opportunity is unlimited.
我认为可以确切地说，这里的潜能近乎无限。
00:17 - 00:26
70% of the world's surface is covered in oceans, and all oceans generate large waves and there is power available on any coastline facing those.
地球表面70%被海洋覆盖，所有海域都会掀起汹涌波涛，任何面向海浪的海岸线都蕴藏着取之不尽的能量。
00:26 - 00:37
Wave power is accessible to everyone and advocates say that it could provide energy for hundreds of thousands of homes. Richard Yemm agrees.
波浪能对所有人开放可及，支持者表示它能为数十万家庭供应电力。发明家理查德·耶姆对此深表认同。
00:37 - 00:47
His invention, aptly named Pelamis after a tropical sea snake, looks just like that, a giant red snake floating on the ocean surface.
他的发明以一种热带海蛇命名为“海蛇号”（Pelamis），其外形恰如其名：一条漂浮在海面上的巨型红色海蛇。
00:47 - 00:56
And as it bounces up and down on water, it turns the power of the waves into electricity. Here's how it works.
随着它在波涛中上下起伏律动，便将海浪的磅礴动能转化为源源不断的电能。它的运作原理如下：
00:56 - 01:03
Waves move the cylinders floating on the ocean's surface. Inside the cylinders are hydraulic rams.
海浪推动漂浮在海面上的圆柱浮筒，浮筒内部装有液压缸柱塞。
01:03 - 01:13
These water pumps force the water through a hydraulic motor under high pressure. And this, in turn, drives an electrical generator which produces electricity.
这些水泵在高压下推动流体通过液压马达，进而带动发电机运转输出电能。
01:13 - 01:21
Pelamis can generate 750 kilowatts of energy, but the plan is to create farms of these sea snakes.
单台“海蛇号”能发出750千瓦电力，而长远规划是打造由成群“海蛇”组成的波浪发电农场。
01:21 - 01:38
The kind of format that we would expect would be an array of machines sharing mooring points between themselves to create a grid of perhaps 30, 50 or 100 machines covering a couple of square miles of the sea surface.
我们预期的阵列模式将是共享锚泊点的一组发电机群，由30台、50台甚至100台机器组成电网，覆盖数平方英里的海面。
01:38 - 01:49
And that's enough electricity to light up a small city. The technology was first tested in a lab where wave simulators recreated all types of weather conditions.
这足以点亮一座小型城市。该技术最初在实验室利用造波模拟器在各类气象环境下进行全方位测试。
01:49 - 02:08
Then scale models were created and tested in open water, but the real challenge lies ahead. They've really got to design the technology which can survive in a very hostile place in the sea.
随后等比例缩放模型在开阔水域实测，但真正的硬仗还在前方：他们必须设计出能经受住极端恶劣严酷海洋环境考验的技术。
02:08 - 02:24
After five long years, the time has finally arrived to test a life-size prototype and it's happening here off the coast of Scotland.
历经漫长的五年砥砺，全尺寸原型机的实战海试时刻终于到来，测试地点正位于苏格兰外海。
02:24 - 02:40
It's long and thin, so when big waves come through, its streamline presents the minimal area to these ocean monsters and storms. But in small waves, it is the optimum hydrodynamic shape for capturing power.
机身细长流线，遭遇惊涛骇浪时能以最小受力面抵御狂风暴浪；而在微波细浪中，这又是捕获波浪能量的最佳流体动力形态。
02:40 - 02:51
But today the team runs into a problem. One of the hydraulic rams malfunctions and Pelamis is taken back to shore for repairs.
然而今天团队遭遇了故障：其中一个液压系统出现异常，“海蛇号”不得不被拖回岸边紧急抢修。
02:51 - 03:02
Survivability has been a critical issue for everyone in the marine environment. It's one of the biggest factors that we must address if we're going to create economic wave energy.
在海洋环境中，设备的生存持久性是核心死穴。如果我们要实现经济可行、有商业竞争力的波浪发电，就必须攻克这一难关。
03:02 - 03:12
And creating economic energy is key. Pelamis already has its first commercial client in Portugal.
实现具备商业效益的平价清洁能源是关键。“海蛇号”已在葡萄牙迎来了其首位商业客户。
03:12 - 03:28
After years of tests, the first machines were in place and generating energy in Portugal in 2008. The potential of wave power is tremendous, accessible to all and limitless in supply.
历经多年实测，首批商业机组于2008年在葡萄牙正式并网发电。波浪能潜能无比巨大，普及亲民且取之不尽。
03:28 - 03:46
As we get better at it, as it's deployed, as we get the economies of scale, as the technology is honed and improved, this is technology of gigawatts of power.
随着技术日臻成熟、装机规模铺开、规模效应显现以及工艺持续精进，这项技术终将释放吉瓦（GW）级别的澎湃清洁电能！
📝 2. Video Activities 原版全套练习
得分: 0 / 14 题
🎯 视听练习完成进度
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🌊 Before Watch: Diagram (四大海洋发电机械匹配)
📘 Before Watch: Definitions (核心工程术语解析)
📑 While Watch: Main Idea (海浪潜能核心主旨)
🐍 While Watch: Pelamis Facts (海蛇号工程事实填空)
🗂 20 Vocab Review (单元核心学术词盘点)
🤔 Critical Thinking (极端海况与海洋发电审辩)
🌊 Before You Watch · A. Diagram Matching 海洋发电机械图解 (Page 119)
4 题 · 官方示意图匹配
P119 Before Watch A · Upper left
1. Upper left diagram item: Which caption matches this machine?
P119 Before Watch A · Middle
2. Middle diagram item: Which caption matches this machine?
P119 Before Watch A · Bottom left
3. Bottom left diagram item: Which caption matches this machine?
P119 Before Watch A · Right
4. Right diagram item: Which caption matches this machine?
📘 Before You Watch · B. Definitions 核心工程术语 (Page 119)
4 题 · 官方释义配对
P119 Before Watch B · 1
5. long, hollow tubes for carrying water, gas, steam, etc. matches which word?
P119 Before Watch B · 2
6. devices that force air, water, gas, etc., in or out of something matches which word?
P119 Before Watch B · 3
7. engines that have parts that turn with the help of water, wind, etc. matches which word?
P119 Before Watch B · 4
8. the alternating rising and falling of the ocean that occurs each day matches which word?
📑 While You Watch · A. Main Idea 视频主旨理解 (Page 120)
1 题 · 官方精炼概括
P120 While You Watch A · Main Idea
9. Which statement expresses the main idea of the video?
🐍 While You Watch · B. Facts About Pelamis 工程细节填空 (Page 120)
5 题 · 官方实录填空
P120 Pelamis Fact · 1
10. Pelamis is named after a tropical 1. ________.
P120 Pelamis Fact · 2
11. Water pumps force water through a motor under 2. ________ generating electricity.
P120 Pelamis Fact · 3
12. Pelamis was first tested in a lab where wave simulators recreated different 3. ________.
P120 Pelamis Fact · 4
13. Scale models were created, and the first test of a full prototype was done off the coast of 4. ________.
P120 Pelamis Fact · 5
15. It was first used commercially in 5. ________, beginning in 2008.
🗂 Unit 7 Vocabulary Review · 单元20核心学术词盘点 (Page 120)
自测打勾 · 巩固内化
点击勾选已熟练掌握的 Unit 7 核心学术词汇：
🤔 Critical Thinking · 官方高阶批判性审辩思考 (Page 120)
审辩思考 · 深度拓展
Q: Although tides are predictable in any one location, the weather is not. What are the potential challenges of ocean energy?
Teacher's Guide 参考观点与启迪：
海洋设备必须拥有极高的生存韧性（survivability），以经受狂暴风暴潮与海水高盐度腐蚀。此外，大规模海浪农场可能对沿海航运水道产生干扰，或对近海捕捞渔业生态带来影响。波浪能的大规模部署需综合考量地理纬度、岸线水文条件以及当地社区居民对清洁能源技术的接纳程度。
海洋设备必须拥有极高的生存韧性（survivability），以经受狂暴风暴潮与海水高盐度腐蚀。此外，大规模海浪农场可能对沿海航运水道产生干扰，或对近海捕捞渔业生态带来影响。波浪能的大规模部署需综合考量地理纬度、岸线水文条件以及当地社区居民对清洁能源技术的接纳程度。
Unit 7 · 大满贯通关大师榜！
Reading Explorer 3 · Unit 7 Energy Solutions 终极通关认证
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视听测试得分
100%
原版音视频研读率
20 / 20
核心学术词盘点
MASTER
荣誉称号
“The potential of wave power is tremendous, accessible to all and limitless in supply... This is technology of gigawatts of power.”