sink
船不会沉下去吧？
The boat isn't going to sink, is it?
— 崖上的波妞 (2008)
别靠近水，会沉下去的。
Don't go near the water, or you'll sink.
— 海洋之歌 (2014)
还真坚固，不肯沉下去
It’s surprisingly sturdy—it just won’t sink.
— 从海底出击 (1981)
我不算星辰码头，它在台风过后嘛，已经沉下去了。
I’m not counting Star Pier—it sank after the typhoon.