go under
phrasal verb with go verb uk/ɡəʊ/ us/ɡoʊ/ going | went | gone
(SINK)
沉下去，沉没
to sink
The ship went under just minutes after the last passenger had been rescued. 最后一名乘客获救后仅几分钟轮船就沉没了。
(FAIL)
破产，倒闭，垮掉
If a company goes under, it fails financially.
The charity will go under unless a generous donor can be found within the next few months. 除非能在今后几个月中找到一位捐赠者慷慨解囊，否则这家慈善机构将会倒闭。