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来源：雅诚德英语网
Our ancestors had, earlier than the westerners, learned how to calculate workdays accurately and reasonably.
原来我国的古人不但比西方各国的人更早地懂得科学地、合理地计算劳动日；
Our ancestors had, earlier than the westerners, learned how to calculate workdays accurately and reasonably.
原来我国的古人不但比西方各国的人更早地懂得科学地、合理地计算劳动日；