救生圈可以增强在水中的信心。
我试着给他拍一张在水中的照片。
他凝视着自己在水中的倒影。
当声音在水中传播时，奇怪的事情会发生。
When sound travels through water, strange things can happen.
一个塑料袋在水中漂浮。
他在水中迅速游动。
巨大的后肢用于在水中驱动。
他们可以在水中摒住呼吸。
声音在水中传播得很快。
杰克和鸭子在水中嬉戏。
他们认为在水中折射的棍子是弯曲的棍子。
They think that a stick refracted in the water is a crooked stick.
鳄鱼们在水中游泳。
在水中，成年人应该互相观察，寻找有麻烦的迹象。
Adults should watch each other for signs of trouble when in water.
那些成功的人击退了那些在水中奋力爬上甲板的人。
Some who succeeded fought off those in the water who had the strength to try to claw their way aboard.
马林鱼、旗鱼和箭鱼的长嘴可能会帮助它们在水中滑行。
The long bill of marlins, sailfishes, and swordfish probably helps them slip through the water.
这些化石看起来像海豚，它们肯定像海豚一样在水中生活。
The fossils look like dolphins and they surely lived like dolphins, in the water.
这是因为，根据阿基米德的位移原理，漂浮物在水中会转移自身的重量。
This is because, according to Archimedes' principle of displacement, floating objects displace their own weight in water.
此外，海象和海豹用它们的后鳍推动自己在水中运动，而海狮用它们的前鳍。
Moreover, walruses and seals drive themselves through the water with thrusts of their hind flippers, but sea lions use their front flippers.
机制茶在水中漂浮的时间更长，味道苦涩。
她说，能真正让她的遥控潜水器在水中顺畅移动并不容易。
She says actually getting her ROV to move through water well was not easy.
在水中混合一点果汁是一个有趣的方法，能帮助你喝下大量的水。
Mixing a little fruit juice into your water is a fun way to help you drink plenty of water.
这种细长蜿蜒的身体能让陆地上的蛇在茂密的草丛中爬行，也能让水蛇在水中游动。
The elongated, serpentine body that allows land snakes to slither through dense grass also serves aquatic snakes in propelling through the water.
在水中大多数氢原子和氧原子是稳定的，但这两个元素也有微量以较重的同位素形式存在。
Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.
为了保持在水中不至于沉底，尾部的顶端比底端向后延伸，沿着后端形成一个斜面，产生提力。
To help generate lift to keep midwater, the top of the tail extends farther back than the bottom, creating a slant along the back edge.
不过，走鲸的脊椎结构显示，即使没有尾片，它们在水中同样能够像现代鲸鱼那样通过身体后面部分的上下摆动来游动。
The structure of the backbone shows, however, that Ambulocetus swam like modern whales by moving the rear portion of its body up and down, even though a fluke was missing.
它们是那么平静那么清澈，以至于 Olle以为自己看见一只鸟正沉入水中，其实那是一只正在滑翔的海鸥在水中的倒影。
They were so tranquil and clear that Olle thought he saw a bird drowning in one, when it was actually the reflection of a gull gliding above the surface.
一道道光线将重聚于满月中，这一圆月在水中摇曳着胜利者归来的光芒。
The rays were to return to the strengthened moon that shook upon the water in triumphant reassumption.
二氧化碳在水中溶解后会形成碳酸。
When carbon dioxide dissolves in water it forms carbonic acid.
捕食者在水中的行为也有很大不同。
沉重的铁锚和铁链被重重的抛在水中。
The heavy iron anchor and chain tumbled noisily into the water.
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