He sees that warm water flows back eastwards when winds that normally blow westwards weaken, or sometimes the other way round.
他发现，当通常向西吹的风减弱时，温暖的海水就会向东流回，有时反之亦然。
If the two media have really different densities, like air and water, then most of the energy is going to be reflected back, very little of it will keep going and get transmitted into the new medium.
而如果这两种介质的密度相差较大，就像空气和水那样，那么大部分的能量将会折射回来，只有一小部分会继续传播进入到新的介质中。
A 9-year-old Central California boy braved strong currents and cold water to swim from San Francisco to Alcatraz Island and back.
加州中部一名9岁的男孩不顾湍急的水流和冰冷的海水，从旧金山游到了恶魔岛，然后又游了回来。
Every time he went down to try to sip some of the water, the water receded, and anytime he reached up for the grapes, the grapes were pulled back.
每当他弯腰尝试抿些水时，水就退却，每当他伸手摘葡萄时，葡萄就会被拉回来。
The Mole flung his sculls back with a flourish, and made a great dig at the water.
鼹鼠莫尔一挥手，把双桨甩了回去，在深深插进了水里。
As a result of crustal adjustments and faulting, the Strait of Gibraltar, where the Mediterranean now connects to the Atlantic, opened, and water cascaded spectacularly back into the Mediterranean.
由于地壳调整和断层作用，直布罗陀海峡打开了，海水一举泻入地中海，十分壮观。直布罗陀海峡现在是地中海与大西洋的连接处。
He looked at her then looked back at the water.
他望了一下她，然后把头转向水面。
Where 50-kilogram king salmon once fought their way up waterfalls to lay their eggs in gravel beds, there now are only concrete walls holding back still water and deep beds of muddy deposits.
50公斤重的大马哈鱼王曾经奋力爬上瀑布，把卵产在砾石床上，现在只有混凝土墙挡住静止的水和深深的泥床。
The frog plopped back into the water.
青蛙扑通一声跳回水中。
Water allotments to farmers were cut back in the drought.
在干旱时期配给农民的水量减少。
I can't tell my son what to do; it's water off a duck's back with him.
我无法告诉我儿子该做什么，他根本听不进去。
An hour later, the son came back with the empty basket and told his father it was impossible to hold water with the basket.
一个小时后，儿子带着空篮子回来了，告诉父亲用篮子装水是不可能的。
From what I remember, water changes back and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.
根据我的记忆，水往复地变化，从湖泊和海洋里的水变成水蒸气，然后当它以雨或雪——也就是降水的形式落下时又变成水。
You know, I am still not too clear about the hydrologic cycle, the transfer of water back and forth between the earth and the atmosphere.
你知道，我仍然不是很清楚水文循环，也就是水在地球和大气之间的来回转移。
Later ancestors still evolved back into the water and became sea turtles.
后来的祖先仍然进化回水中，变成了海龟。
They pushed and tried to force the whale back into the water, but it was no use.
他们推着，试图迫使鲸鱼回到水里，但没有用。
However, they are, in one respect, less fully given back to the water than whales or dugongs, for turtles still lay their eggs on beaches.
然而，从某种程度上讲，海龟并没有像鲸鱼或儒艮一样完全回到水中生活，因为它们依旧在海滩上产卵。
The first anti-protest vehicle equipped was built on Mercedes chassis, and already had a large water cistern in the back.
第一辆带反抗议装备的卡车是建立在奔驰的底盘上的，并已经在后部配备一个大号水箱。
They live in the salt water from two to seven years, until they, too, are ready to swim back to reproduce.
它们会在盐水中生活2到7年，直到它们也准备好游回来繁殖为止。
Turtles went back to the sea a very long time ago and, like all vertebrate returnees to the water, they breathe air.
海龟很久以前就回到了海里，和所有返回水中的脊椎动物一样，它们呼吸着空气。
At that moment, a little girl in a white dress, holding a long, dripping water lily, dodged from behind a bush, stared at them and dodged back again.
在那一刻，一个身着白衣的小女孩，举着一支长长的、滴水的百合花，从后面的树丛中跳了出来，直勾勾地盯着他们，又闪回去了。
This heated air, drawn down from the roof, then mixes with the greenhouse air as it reaches a second sea-water-moistened cardboard wall at the back of the greenhouse.
从屋顶吸出的这种热空气，在到达温室后部第二个被海水润湿的纸板壁时，便与温室空气混合。
The water level's back to normal now and you shouldn't have any trouble, the path's very level underfoot.
现在水位已恢复正常，你应该不会有什么麻烦了，脚下的小路非常平坦。
You might just lie back and let the scent of lavender and the sound of falling water quiet your anxiety while a licensed massage therapist eases the crick in your neck.
你可以躺下，让薰衣草的香味和落水的声音缓解你的焦虑，同时让有执照的按摩治疗师缓解你脖子上的痉挛。
Derek and I put it back in the water.
德里克和我把它放回了水里。
I must take back clean water this time, even though it will take me a long time.
这次我必须带回干净的水，尽管这会花费我很长时间。
The boy walked to the river and came back with a bowl of water.
男孩走到河边，取了一碗水回来。
Risking his life, Joe jumped back into the cold water and managed to drag (拽) his dad up onto some rocks.
乔冒着生命危险跳回寒冷的水中，成功把他爸爸拖到一些岩石上。
He ran back with a bottle of water and sprinkled the water on his daughter's head.
他拿着一瓶水跑回来，把水洒在了女儿的头上。
The weight of the ball causes the dragon's head to move down and the dragon's tail pulls the water bowl back up.
球的重量使龙头向下移动，龙尾将水碗拉起来。
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