碰上的用法和樣例：
例句
-
盜賊一拐彎面對面地碰上個警察。
The burglar turned the corner and found himself face to face with a policeman. -
我把你的文件丟了，純粹是碰上倒霉事了。
I lost your file by pure mischance. -
在一個雨夜，那個警察正巧碰上了一夥走私犯。
One rainy night the policeman had a chance encounter with a gang of smugglers. -
在路上，他們碰上了大風。
On the way they had run into a high wind.
