在水下的

The average fresh weight was 35.22 g per plant, with the above-water part counted 77% and the under-water part 23%. The waterborne part played a key role in the biomass structure. The directly absorbing contents of N and P were 13.05-33.14 kg/(hm2·a) and ?5.62-6.67 kg/(hm2·a), respectively.

研究成果如下：水芹植株的平均鲜量35.22 g，其中水上部分占77%，水下部分占23%，生物量分布主要集中在水上部分；其对N，P的直接吸收分别可以达到13.05～33.14 kg/(hm2·a)和5.62～6.67 kg/(hm2·a)。

Above-water remote sensing reflectance and scattering extinction coefficients of water were derived by modeling radiative transfer across the water-air interface with in situ measured water quality data and beneath water spectral reflectance measurements in Lake Tai.

利用太湖水质参数数据、水面以下实测光谱数据以及水-气界面辐射传输模型，计算得到了水体漫射衰减系数和水面以上遥感反射比，探讨了悬浮物对水体中营养盐以及水下光照等水体环境因子的影响，在此基础上，利用水面以上遥感反射率建立了悬浮物浓度的定量反演模型。

Penguins surface near an air hole in Antarctica, captured with a remote underwater camera.

这张企鹅在南极洲冰面空气孔附近活动的照片是由水下相机遥控拍摄的。

When a scuba diver jumps off a boat, he has a device called anoctopus attached to his air tank.

当一个带着水下呼吸器的潜水员从船上跳入水中时，有一个叫做章鱼的装置接在氧气瓶上。

Article 22 A vessel shall, when washing the cabin, driving air or replacing the cabin, select safe water areas, be far from crowded navigable areas, vessel's routing system areas, navigation-forbidden areas, navigation channels, ferries, harbors for passenger liners, harbors for dangerous goods, military harbors, locks, large bridges, underwater passages and important targets alongshore under protection, and shall, before carrying out the operations, report to the maritime administrative institution for ratification.

第二十二条船舶进行洗舱、驱气或者置换，应当选择安全水域，远离通航密集区、船舶定线制区、禁航区、航道、渡口、客轮码头、危险货物码头、军用码头、船闸、大型桥梁、水下通道以及重要的沿岸保护目标，并在作业之前报海事管理机构核准，核准程序和手续按本规定第十三条关于单航次海上危险货物过驳作业的规定执行。

When I left, they dove only to get away from a bear or a frightening noise.

当我离开的时候，它们只在躲避熊或听到可怕的声音时才会潜到水下。

With a biotope aquarium you can give yourself a glimpse into an underwater world that is seldom seen by others.

拥有一个生态鱼缸您可以给您自己隐约的显现一个在其它地方很少见的水下世界。

I saw my first of these just ahead of the bowsprit, about 12 feet deep, as the blowhole of a whale erupted a big bolus of bubbles.

我第一次看到的这种情形就发生在护栏平台前面：水下4米左右，一头鲸鱼的喷水孔吹出了好大一团泡泡。

Shows a deep-sea jellyfish found and photographed by a US-Philippines underwater expedition in the Celebes Sea, southern Philippines.

这只水母是一只美，非联合水下探险队在菲律宾南部的西塈B斯海发现并拍摄的。照片：法新社

Simulation experiments and analysis show that the proposed method is robust in a wide range of characteristic exponent values of stable distribution.

仿真表明这种算法是一种在高斯和分数低阶α-稳定分布噪声条件下具有良好韧性的水下目标定向算法，相对共变而言，分数阶相关具有更宽的噪声特征指数范围，更适用于实际应用。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。