他留下了字条。
tā liú xià le
He left a note.
别留下垃圾。
bié liú xià lājī
Don't leave trash behind.
他留下来帮忙。
tā liú xià lái bāngmáng
He stayed to help.
我留下等你。
wǒ liú xià děng nǐ
I'll stay and wait for you.
