vt.

1. 用（力），尽（力）
   He has exerted all his strength.

   他已竭尽全力。

2. 运用，行使；发挥；施加
   He's been exerting his influence on his friend to change his decision.

   他一直在影响他的朋友改变决定。

v.

1. apply or bring to bear (a force, influence, or quality).
2. (exert oneself) make a physical or mental effort.