a force

 
       
  • 一个力

a force的用法和样例:

例句

  1. He was a force behind these social changes.
    他是推动这些社会变革的主力。
  2. Bayin sent a force in pursuit of him.
    莽应里派出一支军队对他进行追击。
  3. A force must be exerted before work can be done.
    在功被完成之前,必须先施加一个力。
  4. A machine may change the direction of a force.
    机器可以改变力的方向。
  5. They had to fight with a force twice their numbers.
    他们不得不和两倍于自己的兵力作战。
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