They must also keep swimming to keep from sinking, since most have largely or completely lost the swim bladder, the gas-filled sac that helps most other fish remain buoyant.
它们还必须不停地游动以避免下沉，因为大多数鱼基本上或完全失去了鱼鳔，这个充满气体的囊帮助大多数其他鱼保持浮力。
Part of that terror may actually stem from a famous attribute of sharks: their need to keep swimming in order to breathe.
上面所说的恐惧也许就是因为鲨鱼的一个广为人知的特点：也就是它们需要一直游动才能呼吸。
Oh well, it is better to keep swimming in the direction where you think the buoy is located than to stop until you sight it.
向着自己认为浮标的位置保持前行，比停下来直到看到浮标要好。
Doing this repeatedly can have the unhappy effect of amplifying, rather than muting, the past's continuing influence as you keep swimming in that polluted pool.
这些过去的事情还是会影响你，就像你一直在污水里游泳一样。
We have excellent coaches, wonderful facilities and a swimming pool to help you keep fit.
我们有优秀的教练，完善的设施和游泳池来帮助你保持健康。
You should go swimming with adults and make sure that they are able to keep you safe.
你应该和成年人一起去游泳，并确保他们能够保护你的安全。
No wonder I don't have time to get a part-time job, train for swimming badges or join one of those knot-fixated paramilitary groups like Mum and Dad keep suggesting.
怪不得我没时间找兼职工作，为游泳奖章而训练或参加那些爸妈建议的拉练训练营之类的。
Or how about when you go snorkeling by a school of fish and you see every single one of those fish swimming along at the same speed, they keep the same distance from each other.
或者是在你浮潜的时候经过的鱼群，就会看到它们的每一条鱼在以相同的速度游过去，而且它们互相之间总是保持相同的距离。
It is virtually impossible to see and is tiny enough to pass through nets meant to keep jellyfish away from popular swimming spots.
人们几乎看不见它。它的身型十分微小，可以穿过阻挡水母的网，进入人多的游泳区域。
On February 6th Mr Nutter launched the "Splash and Summer fund" campaign, a public-private fund-raising partnership to keep open 20 swimming pools that had been scheduled to close.
2月6日，纳特先生开展了一个夏日基金会——通过公私合作的伙伴关系来维持原计划关闭的20家游泳池正常运转。
To keep curiosity at bay there is a swimming-pool, a bowling-alley, a putting-green and two saunas (one hot; one seedy).
为了能让游客按捺住好奇心，宾馆建造了一座游泳池、一条保龄球道，一个小型高尔夫练习场和两个桑拿浴室（一个太热，一个太脏）。
Walking, swimming, cycling and in-line skating are all good choices, as long as you keep the intensity low.
慢走，游泳，单车和滚轴溜冰都是很好的选择，只要您保持低强度即可。
In a sense, life is like swimming; if you keep holding on to the sides of the pool, you (will) never learn.
从某种意义上说，生活就像游泳。如果总是扶住池边，就永远也学不会。
Sure, we've all heard that swimming laps and water aerobics will keep us fit, but there are plenty of less fitness-focused activities that can also count as, well, exercise.
大家当然都知道，游泳和水中有氧运动会让我们保持健康，但是还有许多较少关注身材保持的活动也可以算作运动。
The hotel boasts a swimming pool, a fitness center, and mini golf driving bay and putting green to keep guests active.
酒店拥有一个游泳池，一个健身中心，和迷你高尔夫驾驶湾，并把绿色保持客人的活动。
In order to keep the children from swimming in sea, he keeps them staying at home all day.
为了不让孩子们去海里游泳，他让他们整天呆在家里。
Swimming can not only make us strong and healthy, but also helps us to keep in good shape.
游泳不仅使我的身体更加结实和健康，而且还帮助我保持好的体形。
In order to keep the children from swimming in sea, he keeps them staying at home all day.
为了不让孩子们去海里泅水，他让他们成天呆在家里。
These two types of coat help keep the dog warm and dry while swimming in cold waters when retrieving ducks.
这两层毛使拉拉的皮在寒冷的水中游泳或猎鸭的时候能保持温暖干燥。
Though they are rigid enough to keep the water out, they can be breached by Gungans swimming to and from the city.
尽管牢固的气泡壁足以防水，但来往于城市的冈根人还是能穿破它。
You'll never keep afloat if you keep throwing your arms and legs about like that; you have to make the proper swimming stroke.
如果你像这样手脚乱舞，你怎么也浮不起来；你必须使正确的游泳姿势。
Just 15 minutes a day of kicking around a ball or swimming might be enough to keep children from becoming obese, British and U. S. researchers said last week.
上星期英国和美国研究员说，只要坚持每天踢球或游泳15分钟就足以防止小孩肥胖。
Fear of drowning will keep a swimmer from swimming in the ocean if there is no lifeguard around.
要是周围没有救生人员，游泳者就不敢到海里游泳，怕淹死。
In preparing for Short Course Nationals, keep in mind how crucial your starts, turns and underwater swimming will be.
在准备短池比赛的时候，要记住你的出发，转身和水下泳姿将是多么重要。
The escaping prisoner, swimming across the river, managed to keep under as the searchlight raked the surface.
这个泅渡的逃犯在探险照灯扫过河面时设法藏到了水下。
The escaping prisoner, swimming across the river, managed to keep under as the searchlight raked the surface.
这个泅渡的逃犯在探险照灯扫过河面时设法藏到了水下。
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