名词短语
中文翻译：总光程持续时间
同义词：
['duration', 'duration of a total eclipse例句：1. The eclipse will last for about an hour and a half.（这次日食将持续大约一个小时半。）']
例句：
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1. The eclipse will last for about an hour and a half.
这次日食将持续大约一个小时半。
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2.The scientists observed the total eclipse from their observatory.
科学家们从他们的天文台观测到了这次全食。
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3. The total eclipse is a rare event that occurs only once every few centuries.
这次全食是罕见的事件，每几百年才会发生一次。