考试之前她总是感到很不安，晚上睡不好觉。

Kǎoshì zhīqián tā zǒngshì gǎndào hěn bù'ān, wǎnshàng shuì bù hǎo jiào.

She always feels anxious before exams and can't sleep well at night.

他脸上露出不安的表情，好像有什么心事。

Tā liǎn shàng lòu chū bù'ān de biǎoqíng, hǎoxiàng yǒu shénme xīnshì.

An uneasy expression appeared on his face, as if something was on his mind.

最近公司要裁员，大家心里都很不安。

Zuìjìn gōngsī yào cáiyuán, dàjiā xīnlǐ dōu hěn bù'ān.

The company is going to lay people off recently, and everyone feels uneasy.