3 sentences

1. 水在摄氏零度时结冰。

   shuǐ zài Shè​shì líng dù shí jié​bīng.

   Water freezes at zero degrees Celsius.

   Source: Tatoeba

2. 地面温度是摄氏零下7度。

   dì​miàn wēn​dù shì Shè​shì líng​xià7 dù.

   Minus seven degrees Celsius on the ground.

   Source: OpenSubtitles

3. 医生告诉他，人的正常体温是三十七摄氏度。

   yī​shēng gào​su tā, rén de zhèng​cháng tǐ​wēn shì sān​shí​qī Shè​shì dù.

   The doctor told him that the normal human body temperature is 37 degrees Celsius.

   Source: Dong Chinese Dictionary