sling thermometer

例句：

1. 1. We used a sling thermometer to measure the temperature of the water.
   我们用投石器温度计测量了水的水温。
2. 2. The sling thermometer was a useful tool for measuring the temperature of the liquid.
   投石器温度计是一种有用的工具，用于测量液体的温度。
3. 3. The sling thermometer helped us to quickly and accurately determine the temperature of the room.
   投石器温度计帮助我们快速而准确地确定房间的温度。