名词
中文翻译：日食日
同义词：
['eclipse day', 'solar eclipse day']
例句：
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1.The ephemeris day is calculated based on the position of the sun and moon.
日食日是根据太阳和月亮的位置计算得出的。
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2. During an eclipse, it's important to observe the sky carefully to avoid being blinded by the bright light.
在日食期间，仔细观察天空以避免被明亮的光线刺眼。
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3. Astronomers use precise ephemeris data to predict when a total solar eclipse will occur.
天文学家使用精确的日食数据来预测何时会发生日全食。