1. Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
    此后不久，英国著名的"挑战者"号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题，

2. Since the sea covers the greater part of the earth´s surface,
    既然海洋覆盖着地球的大部分表面，

3. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
    从测定海深到测定鱼群，这一进展比较容易。

4. She threw the bottle into the sea.
    又将瓶子扔进了大海。

5. So it comes as a surprise to learn that giant fish are terrifying the divers on North Sea oil rigs.
    因此，听说北海石油钻井平台上的潜水员受到巨型鱼类的恐吓，确实很让人吃惊。

6. Stalin said that if he understood the question rightly, he was in favour of assuring free navigation to and from the Baltic Sea.
    斯大林说如果他对此问题的理解是正确的话，那么他赞同保证波罗的海过往船只自由通航。

7. Some think entering a room full of people is like going into a lion's cage.
    有人认为走进一个满是人的房间就像走进了一个狮子笼。

8. People travelling long distances frequently have to decide whether they would prefer to go by land, sea, or air.
    出远门的人常常需要决定是走旱路、水路，还是坐飞机。

9. Perhaps one should not merely sprinkle the pupil, but plunge him right down into the sea of language and enable him to swim by himself as soon as possible.
    也许我们不应该只在学生身上洒水，而应该把他们投入语言的海洋，使他们及早学会游泳。

10. Gradually the river grows wider, the banks recede, the waters flow more quietly, and in the end, without any visible break, they become merged in the sea, and painlessly lose their individual being.
    然后河面渐渐地变宽，两岸后撤，河水流得平缓起来，最后连绵不断地汇入大海，毫无痛苦地失去了自我的存在。