一般使用包括软管和烧瓶在内的采样设备来采集水样，有时候，浮游生物是通过船尾的拖曳滤网收集的。

Sampling devices include hoses and flasks to collect water samples, and sometimes, plankton are collected on filters dragged through the water behind a ship.

youdao

这通过将液体抽向船首来完成，这将使它的头部下沉，或者当上升时把液体抽向船尾让船首上翘。

This is done by pumping fluid towards the bow, which pitches it down for a dive, or sending it towards the stern to point the nose up when ascending.

youdao

我将从你船尾通过。

Reply: I will pass astern of you.

youdao