mercury thermometer

例句：

1. 1. The mercury thermometer in the lab reads 20 degrees Celsius.
   实验室里的水银温度计显示摄氏20度。
2. 2.He used a mercury thermometer to measure the temperature of the water.
   他用一个水银温度计来测量水的热度。
3. 3. The mercury thermometer was broken when it fell from the shelf.
   当它从架子上掉下来时，水银温度计摔坏了。