一推一拉，必定会导致大量城市外来人口的产生。
The two kinds of power induce large amount of migrant population in the city.
“这会让他疼得天翻地覆的，”吉姆提醒亚伦。最后的一推，关键的一拉，终于让亚伦摆脱险境。
"This is going to hurt like hell," Jim warned Aaron. With a final push on the car and a monumental tug on the teenager, the men pulled Aaron free.
用手肘或前臂在开关上一推或一拉，门就会打开，这样就会避免手上的脏物沾到门上，留在休息室或是餐厅里。
A push or pull on the paddle using an elbow or forearm will open the door, preventing contamination from unsanitary hands in restrooms or cafeterias, for example.
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