今天开会开得太久了，我有点儿困。

Jīntiān kāihuì kāide tài jiǔ le, wǒ yǒudiǎnr kùn.

The meeting lasted too long today, and I feel a bit sleepy.

我下班回家以后，又累又困。

Wǒ xiàbān huí jiā yǐhòu, yòu lèi yòu kùn.

After I got home from work, I was so tired and sleepy.

升降机坏了，好像有人被困在里面了。

Shēngjiàngjī huài le, hǎoxiàng yǒu rén bèi kùn zài lǐmiàn le.

The elevator is broken, it seems somebody is trapped inside.