2 sentences

1. 这里是消防楼梯间。

   zhè​lǐ shì xiāo​fáng lóu​tī​jiān.

   This is a fire stairwell.

   Source: OpenSubtitles

2. 楼梯间没有摄像头。

   lóu​tī​jiān méi​yǒu shè​xiàng​tóu.

   There are no cameras in the stairwell.

   Source: OpenSubtitles