这个水库的水已经枯竭了。
zhègè shuǐkù de shuǐ yǐjīng kūjié le 。
The water in this reservoir has already been exhausted.
这种植物需要大量水分，若没有水就会枯竭。
zhèzhǒng zhíwù xūyào dàliàng shuǐfèn ， ruò méiyǒu shuǐ jiù huì kūjié 。
This type of plant needs a lot of water; if there is no water, it will dry up.
他的精力已经枯竭，无法继续工作。
tāde jīnglì yǐjīng kūjié ， wúfǎ jìxù gōngzuò 。
His energy has already been exhausted, and he cannot continue working.