The rural workforce has been flowing in to the cities ever since the open door policy was adopted.
自从改革开放政策实施以来,农付劳动力正不断流向城市。
A moment later, the Class 4 runner fell and hurt his leg, but he quickly got up and went on running.
过了一会儿,4班的运动员摔倒了,伤了腿,但是他很快爬起来,继续往前跑。