n. 努力, 发挥, 运用

[医] 劳力, 用力

[ noun ]
use of physical or mental energy; hard work
<noun.act>
he got an A for effortthey managed only with great exertion

Exertion \Ex*er"tion\, n.
The act of exerting, or putting into motion or action; the
active exercise of any power or faculty; an effort, esp. a
laborious or perceptible effort; as, an exertion of strength
or power; an exertion of the limbs or of the mind; it is an
exertion for him to move, to-day.

Syn: Attempt; endeavor; effort; essay; trial. See {Attempt}.