• An electric motor helps the operator pull a heavy load or go up a hill.

    VOA: special.2009.05.11

  • And if you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.

    如果在水槽里放个发动器,来让水上下起伏,波浪形成于,水槽的一端,然后从左向右扩散。

    麻省理工公开课 - 固态化学导论课程节选

  • What this does then is it paralyzes you because your motor neurons-- You send the command to your arm to stand, to lift up.

    结果就是它能使你瘫痪,因为你的运动神经元,你想要举起手臂

    耶鲁公开课 - 心理学导论课程节选

  • I mean, you know the wings go, and the air runs, and then the motor on the engine and it's a miracle how it gets up there and that is the way I used to explain the Greeks, because I had no better idea.

    我的意思是,你知道机翼的作用,空气的流动,还有引擎上的发动机,飞机能飞起来,是个奇迹,我就是用这种方式来解释希腊历史的,因为我也没有更好的方法了

    耶鲁公开课 - 古希腊历史简介课程节选

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