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。
For example, you can send information abroad immediately, but mailing a letter might take a week or so.
例如,你能够马上发送信息到国外,但寄一封信可能要大约一周的时间。