他的弊病就是经常迟到。

Tā de bìbìng jiùshì jīngcháng chídào.

His bad habit is that he's often late.

每个人都总有弊病。

Měi ge rén dōu zǒng yǒu bìbìng.

Everyone has flaws.

她太完美了，几乎找不出弊病。

Tā tài wánměi le, jīhū zhǎo bù chū bìbìng.

She's so perfect that you can hardly find any fault with her.