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1.The sentinel pyrometer is used to monitor the temperature of the Earth's surface.
守夜人式温度计用于监测地球表面的温度。
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2. The sentinel pyrometer was developed to detect changes in the Earth's temperature.
守夜人式温度计被开发出来，用来检测地球温度的变化。
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3. The sentinel pyrometer is an essential tool for monitoring the environment.
守夜人式温度计是监测环境的重要工具。