2 sentences

1. 他启开了密闭的箱子。

   tā qǐ kāi le mì​bì de xiāng​zi.

   He opened the sealed box.

   Source: Dong Chinese Dictionary

2. 我不喜欢密闭空间。

   wǒ bù xǐ​huan mì​bì kōng​jiān.

   I don't like confined spaces.

   Source: OpenSubtitles