下沉的英文：
cave in
Setting
sinkage
sinking
submergence
submersion
subsidence
subsidise
verge

参考例句：

He kept afloat by treading water
他靠踩水来保持身体不向下沉。

The ship went under.
船下沉了。

Test wells have been sunk.
勘探井也已经下沉。

The ship went on the rocks and sank.
船触礁下沉了。

Sink or fall to a lower level.
下沉或下降到更低的水平。

He beheld the boat sink.
他注视着那条船下沉。

The ship was settling down by the stern.
船正由尾部下沉。

He could not control the sinking of his legs.
他无法控制他的腿的下沉。

In its early stages the rain was augmented by the small water droplets still descending from the radioactive cloud
开始时，从放射性云下沉的小水滴使雨势增大。

Outside the night 'was very quiet and still, and the new moon was setting.
外面是寂静的深夜，一弯新月正在下沉。

cave是什么意思：
n. 洞穴，地窖
v. （使）凹陷，塌落；在…挖洞穴；投降

They found a refuge in a cave.
他们避难于一个山洞中。

The guide flashed a light into the cave.
导游用手电筒照射洞穴。

The cave roof collapsed.
洞顶坍塌了。

setting是什么意思：
n. 环境；背景；布置；底座；设定；安装
v. set的现在分词

perseverative set
固着心向

plastometric set
塑性变形

A coded character set whose character set is an alphabetic character set
一种编码字符集,它的字符集是一种字母字符集。

sinkage是什么意思：
n. 下沉,下沉度,低洼地