Whales carefully conserve their oxygen when underwater in a couple of ways.
鲸鱼在水下以几种方式小心地保存它们的氧气。
When underwater, the animals pushed water past their gills while simultaneously pushing the glottis down.
当处于水下时，动物会把水推入到腮里，同时也把声门关闭了。
During the welding process, when underwater welding power outputs high level, the system stops feeding wires and wires burn upwards with forming molten droplets.
在水下焊接过程中，脉冲电源输出高电平时，停止送丝，电弧稳定燃烧并形成熔滴；
When an underwater volcano pushes submerged rock to the surface, a new island is created.
当海底火山将水下的岩石推到表面时，一个新的岛屿就形成了。
I mean, just think how little noise from the outside world actually reaches you when your head is underwater.
我的意思是，只需想想当你的头在水下时，你实际能听见多小的外界噪音。
When they come back to the bridge an hour later, it's underwater and everyone is wearing rain shoes.
当他们一小时后回到桥上时，桥已经被淹了，每个人都穿着雨鞋。
In the 1960s, Watlington was making underwater recordings when he noticed some strange, deep sounds.
二十世纪60年代，沃特林顿在进行水下录音时，注意到一些奇怪、低沉的声音。
When a lot of water comes, more than half of the city is underwater.
当大量的水涌入时，一半以上的城市都被淹没了。
Two-headed monsters or the ability to breathe underwater rarely come up when I'm sleeping.
双头怪物或者能在水下呼吸之类的，从来就没有在我的梦中发生过。
When large quakes occur underwater, the seafloor may heave or sink.
如果大地震发生在水下，海底有的地方上抬，有的地方下沉。
They continue to emit distress calls underwater both as tadpoles and after they have begun metamorphosis (when they become froglets).
在蝌蚪状态以及变态成幼年角蛙之后，它们都能够在水下发出叫声。
The loggerhead's eyes have evolved to see underwater and this means that when they life their heads above water they are extremely short-sighted.
红海龟的眼睛经过进化可以看清水下世界，这也意味着在水面以上它们会变成深度近视。
Crude oil is full of toxic materials, and when oil from a leaking underwater well hits the surface, many of those materials can enter the air near where cleanup workers are breathing.
原油里充满有毒物质，当它由海底油井泄漏出来，浮上水面时，许多有毒物质会污染清理工人周围的空气。
"And that makes sense when you think of all the water that's there and you've got ports, Bridges, pipelines and other critical infrastructure underwater," she said.
“想想与水有关的港口、桥梁、管道还有其他一些重要的水下基础设施，都需要水下机器人”，她说。
When they are tested on details of an underwater scene they recently viewed, Westerners tend to remember more about the biggest fish, while Easterners remember more about the scene's background.
当被测及刚刚看过的水下世界的细节时，西方人记住更多的是最大的鱼，而东方人记住更多的是背景。
Canal engineer Canvass White solved one of the construction obstacles when he discovered how to create a cement that hardened underwater.
运河工程师Canvass White解决了一个施工难题，他发明了水下硬化水泥。
It means home prices have to fall as much as 30% before borrowers are 'underwater,' when the value of the home falls below the value of the loan, giving Banks a substantial cushion.
它意味着在贷款人由于房屋的价值跌破贷款价值而出现“负资产”之前，房屋价格必须下跌高达30%。此举给银行一个实质性的缓冲空间。
When water from heated underwater hot springs rich in calcium meet with the carbonates in lake water, the result is calcium carbonate, also known as limestone.
当地下含钙丰富的温泉热水与湖水中的碳酸盐相逢时，就会生成碳酸钙，又称石灰岩。
In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.
当1987年《探索》频道第一次播出著名的《鲨鱼周》系列时，研究人员还在使用防鲨笼和简陋的声音追踪设备。
When I went underwater for the first time I was absolutely shocked.
第一次潜入水底时我完全震惊了。
When you don't have an underwater camera, check out your shadows.
当你没有一个水下摄影机，检查你的影子。
A CSAC clock continues to function when GPS signals are blocked, making it incredibly useful deep underground or underwater.
这样芯片大小的原子钟即使在全球定位系统被阻断的情况下也能继续使用，如此这般，原子表在深入地下或水中时尤其有用。
Since the 1970s, when early autonomous underwater vehicles (AUVs) were developed at MIT, Institute scientists have tackled various barriers to robots that can travel autonomously in the deep ocean.
上世纪70年代，麻省理工(MIT)研发了早期的自行潜水器(autonomous underwatervehicles,AUVs)。从那以后，科学家为这种能在深海自动行驶的机器人解决了各种各样的障碍。
The Ewoks freed Mace from the tempter's grip, and also saved him when Mace was trapped in a mystical lake, caught underwater by a strange force field.
伊渥克人帮梅斯从怪兽的嘴里逃脱出来，后来又在他陷入神秘湖的水下力场的时候救了他。
When we use it to test the underwater target strength, one problem is how to discriminate the direct sound of the source with the echo reflected from the target, finding the target character quickly.
当利用它进行水下目标强度测试时，一个很实际的问题就是怎样区分声源直达声和目标反射回声，快速找出目标特性。
The built-in flash is also fairly weak when used underwater.
另外，在水下，内置闪光灯相对来说太薄弱了。
The built-in flash is also fairly weak when used underwater.
另外，在水下，内置闪光灯相对来说太薄弱了。
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