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。
But we do not need to send men down to get the oil out, as we must with other mineral deposits.
但是,我们不必像开采其他矿藏那样,把人送到地下去把石油取出。