deep-sea thermometer

例句：

1. 1.The deep-sea thermometer is used to measure the temperature of the ocean.
   深海温度计用于测量海洋的温度。
2. 2. The scientist used a deep-sea thermometer to study the ocean currents.
   科学家使用深海温度计研究海洋洋流。
3. 3. The deep-sea thermometer was essential for the survival of the crew during the expedition.
   深海温度计对于探险队的生存至关重要。