3 sentences

1. 温度计里含有汞。

   wēn​dù​jì lǐ hán​yǒu gǒng.

   Thermometers contain mercury.

   Source: Dong Chinese Dictionary

2. 要我送个温度计到你房间吗？

   yào wǒ sòng gè wēn​dù​jì dào nǐ fáng​jiān ma?

   Shall I send a thermometer up to your room?

   Source: OpenSubtitles

3. 温度计里的水银柱正在缓慢下降。

   wēn​dù​jì lǐ de shuǐ​yín zhù zhèng​zài huǎn​màn xià jiàng.

   The mercury column in the thermometer is slowly falling.

   Source: Dong Chinese Dictionary