2 sentences

1. 睡眠不足会产生幻觉。

   shuì​mián​bù​zú huì chǎn​shēng huàn​jué.

   A lack of sleep can cause hallucinations.

   Source: OpenSubtitles

2. 我最近一直睡眠不足。

   wǒ zuì​jìn yī​zhí shuì​mián​bù​zú.

   I haven't been getting enough sleep lately.

   Source: Tatoeba