9 sentences

1. 屋里太闷了，把窗户打开吧。

   wū​li tài mēn le, bǎ chuāng​hu dǎ​kāi ba.

   It's too stuffy in the room; open the window.

   Source: Dong Chinese Dictionary

2. 屋里太闷了，开窗放放风吧。

   wū​li tài mēn le, kāi chuāng fàng​fàng​fēng ba.

   It's too stuffy inside; let's open the window to air it out.

   Source: Dong Chinese Dictionary

3. 这个房间太闷了，开窗通通气吧。

   zhè​gè fáng​jiān tài mēn le, kāi chuāng tōng tōng​qì ba.

   This room is too stuffy; open the window to let in some fresh air.

   Source: Dong Chinese Dictionary

4. 屋里太闷了，我想到外面去透透气。

   wū​li tài mēn le, wǒ xiǎng​dào wài​miàn qù tòu​tòu​qì.

   It's too stuffy inside; I want to go outside for some fresh air.

   Source: Dong Chinese Dictionary

5. 先把锅盖上闷一会儿。

   xiān bǎ guō gài shàng mēn yī​huì​r.

   Cover the pot first and let it steam for a while.

   Source: Dong Chinese Dictionary

6. 他整天关在家里，觉得很闷。

   tā zhěng​tiān guān zài jiā​lǐ, jué​de hěn mèn.

   He stays cooped up at home all day and feels very bored.

   Source: Dong Chinese Dictionary

7. 心里闷得慌。

   xīn lǐ mèn de huāng.

   I feel very stifled and uneasy inside.

   Source: Dong Chinese Dictionary

8. 难怪她要我们趁他睡觉时闷死他。

   nán​guài tā yào wǒ​men chèn tā shuì​jiào shí mēn sǐ tā.

   No wonder she wanted us to smother him in his sleep.

   Source: OpenSubtitles

9. 由于窗户全都关着，屋子里感觉特别闷。

   yóu​yú chuāng​hu quán dōu guān zhe, wū​zi lǐ gǎn​jué tè​bié mèn.

   Since all the windows are closed, the room feels particularly stuffy.

   Source: Dong Chinese Dictionary