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Rain Gauges Measure How Much It Rains
雨量计测量降雨量
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A rain gauge is a simple open tube outside.雨量计是一个放在室外的简易敞口管。
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Rain falls straight into the tube and collects.雨水垂直落入管中并积聚。
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A scale on the side shows millimeters of rain.管侧刻度显示降雨毫米数。
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Scientists use this data to track weather patterns.科学家用这些数据追踪天气模式。
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Farmers check it to plan watering crops.农民据此决定何时给作物浇水。
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Kids can build one with a plastic bottle.孩子可用塑料瓶自制一个。
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Measurement is the first step in science.测量是科学的第一步。
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Small tools give big answers about nature.小工具能揭示自然的大奥秘。