Usage note
用力是指使出力气做事情。
Yònglì shì zhǐ shǐ chū lìqì zuò shìqíng.
To exert effort means to use strength to do something.
用力是指使出力气做事情。
Yònglì shì zhǐ shǐ chū lìqì zuò shìqíng.
To exert effort means to use strength to do something.
搬重东西时需要用力。
Bān zhòng dōngxi shí xūyào yònglì.
You need to exert effort when moving heavy things.
用力 and 使劲 both mean using physical strength, but 使劲 is more colloquial.
努力 means putting in effort, often mentally, while 用力 is physical.
轻轻 means doing something lightly, opposite of using force.