動詞 go under:

1. go under, "The raft sank and its occupants drowned"
   同義詞：sink, settle, go down
2. disappear beyond the horizon
   同義詞：set, go down
3. be called; go by a certain name
   同義詞：go by

1. There is not enough headroom for buses to go under this bridge.
   這座橋梁下面的凈空高度不夠，公共汽車不能通行。
2. The ship went under (ie sank) on its first voyage.
   那條船在首次航行時就沉沒了。
3. He failed in doing business and went under.
   他做生意失敗而告破產。
4. The ship struck upon a rock and soon went under.
   這只船撞到一巖石而很快沉沒了。