Her eyes ached from lack of sleep.

她的眼睛因睡眠不足而隐隐作痛。

They were exhausted from lack of sleep.

他们因睡眠不足而疲惫不堪了。

Anxiety can be caused by lack of sleep.

睡眠不足可能导致焦虑。

Lack of sleep is a major factor in loss of libido.

睡眠不足是导致力必多丧失的一个主要因素。

Stress and lack of sleep can aggravate the situation.

紧张和缺少睡眠会使情况恶化。