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。
We'll start with an orientation video. It runs about 15 minutes.
我们将从一个电视简报开始,大概放15分钟。
In the first place, any scientific study requires that there be no preferential weighting of one or another of the items in the series it selects for its consideration.