left off

• adj. 不用的；脱掉的

例句

用作形容词 (adj.)

1. You'll save electricity by turning off lights not in use.
   把不用的灯关掉能省电。
2. So many people had those beepers attached to their belts and they took great care to expose them even when not in use,just to show off.
   好多人把它别在腰带上，不用的时候也想方设法把它露出来，就是为了炫耀。