II 副 in a short while; all at once; all of a sudden: |
| 不能指望人们把旧观念一下儿都抛掉。 One cannot expect people to get rid of their old ideas overnight. |
| 天一下儿阴了下来。 It became overcast all of a sudden. |
| 这天气,一下儿冷,一下儿热。 Look at this weather. It's cold one moment and hot the next. |