1. slip off 溜走；滑落

eg Now slip off your coat and shirt, please.

现在请脱去外套和衬衫。

2. on the ground 在现场，当场；在进行决斗；在地上

eg She swept up the grains of wheat that had spilled on the ground.

她把撒在地上的麦粒儿扫到一块儿。

3. a fit of 阵发；突发一阵

eg Lots of good ideas come to me in a fit of brilliance.

有很多好的主意来找我在一个合适的辉煌。