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1·Whales swim deep under sea.

鲸鱼在深海中游泳。

2·Many of the world's major cities will be under sea water.

世界上许多重要的城市将被淹没在海水中。

3·Kinda, but what if there was a major under sea quake where the Philippine and Eurasian plate meet.

还有一点就是，假设菲律宾和亚欧板块在海底相撞的话，会出现什么状况。

4·It was the first time that full-mechanized caving mining was used under sea in the history of coal mining under sea in the world.

海域下煤层采用综放开采在世界海域煤炭开采史上还是首次。

5·Under sea hotels have long been a dream of architects, travellers and futurists alike, but the process of making them a reality has hit some rough waters.

海底酒店一直以来都是建筑师，旅客和未来学家的夙愿，但使它们成为现实的道路则充满坎坷。

6·The methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water.

本文的研究方法和研究结果，对提高水下通信、探测和成像系统的性能提供了理论基础和实验验证。

7·Even the weight of the skyscrapers contributes to the progressive engulfing of Bangkok. The soils descend from 1.5 to 5.3 cm each year, and a big part of the megalopolis is already under sea level.

曼谷渐渐被越来越多的摩天大楼吞噬，其地平面每年平均下降1.5到5.3厘米，而曼谷这个大都市的许多部分已经低于海平面。

8·Before this was discovered, engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.

在这个原理被发现之前，工程师们已经制造了利用这个原理的仪器，例如测量船下的海洋深度。

9·The Antikythera Mechanism was found a hundred years ago, under water in an ancient Greek shipwreck in the Mediterranean Sea.

100年前，人们在水下，在地中海的一艘古希腊沉船发现了安提基西拉机械装置。

10·A major air-sea rescue is under way.

一项重要的海空营救行动正在进行中。《柯林斯英汉双解大词典》