1 sentence

1. 如果门窗没有关闭，水蒸气很容易进入房间。

   rú​guǒ mén​chuāng méi​yǒu guān​bì, shuǐ​zhēng​qì hěn róng​yì jìn​rù fáng​jiān.

   If the doors and windows are not closed, the water vapor can easily enter the room.

   Source: CCMatrix