水面

A diver with an aqualung doesn't have to keep coming up for air; he canstay underwater for quite a long time.

备有潜水供氧器的潜水员无需不断升出水面呼吸；他可以在水下停留相当长的时间。

A diver with an aqualung doesn't have to keep coming up for air;he can stay underwater for quite a long time.

备有潜水供氧器的潜水员无需不断升出水面呼吸；他可以在水下停留相当长的时间。

One young calf especially enjoyed raising a turtle to the surface with his snout and then shoving him across the tanklike an aquaplane.

一只小海豚特别喜欢用鼻子把海龟推到水面，然后像滑水板一样把海龟从水池的这一边推到那一边。

Within the rivers and streams throughout the tropics there lives an animal that has a projectile weapon sophisticated as a high powered rifle.While most fish feed on what lives in the water, the archerfish can attack those that linger above the surface.

在热带的河流，溪水中生活著一种动物，它的弹射武器尖端得像大火力来福枪一样，大多数鱼都以水中的生物为食，而射水鱼却能捕捉到那些在水面附近活动的猎物。

The floating gates, which have a hollow cavity inside, work according to Archimedes' principle of buoyancy. When compressed air is pumped in, emptying the gates of water, the buoyancy of the giant panels will be greater than their weight, and in just 30 minutes the barrier will float above the surface. The gates are attached to the seabed with hinges, which are designed to absorb the force of waves and keep the barrier in place. The gates will only be raised when waves are higher than 1.1 meters, to reduce interruption of the sea currents to a minimum.

这些中空的水闸门，主要依照阿基米德浮力原理操作，当闸门内注入高压空气排水后，闸门受到的浮力大於闸门重量，只要三十分钟就能浮出水面，闸门底部则用轴承固定在海底，再透过细部结构设计能够悉受波动力量，保持闸门的稳定性，而水闸门只有在浪高超过110公分的时候才会升起，把对海水交换的干扰降到最低，其他维护潟湖生态的措施也获得欧盟肯定，所以在2009年4月，取消摩西工程违反自然保育法的决议。

Based on modeling test in water tank, this paper employed three different iron blocks to model water-bearing bodies and enclosed plastic pipes or rounded wood strips to model roadways. It gave physical modeling of water-bearing bodies in the working face floor with parallel Bipole-Dipole method, made analysis on the character of electrical field and the law of apparent resistivity changing when the low resistivity abnormity bodies were placed flatly close to water level under semi-space condition and were placed flatly, vertically or aslope to the water level under whole-space condition.

本文以三种不同规格的铁块模拟含水体，以密闭的塑料管或木块条模拟巷道，通过水槽模拟实验，采用平行双极—偶极法进行了对工作面底板含水体的物理模拟，分析了低阻异常体铁块在半空间条件下近水面水平放置以及全空间条件下水平、垂直和倾斜放置时的电场特征和视电阻率变化规律。

Almost before he knew it, he was astern, swimming gently on the foam-crackling surface.

他几乎还没明白过来已经落到了船尾，在水泡迸裂的水面上缓缓地游着。

Certain strange habits: arriving at the hour when other people are taking their leave, keeping in the background when other people are displaying themselves, preserving on all occasions what may be designated as the wall-colored mantle, seeking the solitary walk, preferring the deserted street, avoiding any share in conversation, avoiding crowds and festivals, seeming at one's ease and living poorly, having one's key in one's pocket, and one's candle at the porter's lodge, however rich one may be, entering by the side door, ascending the private staircase,--all these insignificant singularities, fugitive folds on the surface, often proceed from a formidable foundation.

人有某些古怪的习惯，有人在别人离去时来到，在别人炫耀时隐藏，一切场合他都穿上一件我们称作土墙那种颜色的外衣，专找僻静的小路，喜欢无人走的街。不参加别人的谈话，避开人群和节日，貌似宽裕其实却很清寒，尽管很富，但还总是自己装着钥匙，烛台放在门房里，从小门进来，走隐秘的楼梯，所有这些无关紧要的奇特的举动，诸如涟漪、气泡、水面转瞬即逝的波纹，常常是来自一个可怕的深处。

Body waves have a higher frequency range and attenuate more rapidly than surface waves.

体波频率范围及衰减有更高的速度比水面的波浪。

The Avocet was struggling in the water, thought it was just scratched.

当游隼追鸟失败远去后，才静下来找那受伤的反嘴鹬，发现它在水面挣扎，初时只当它是被抓伤

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。