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天文学上就是借助儒略日来算的。
This is done in astronomy, with the help of the Julian day.
youdao
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本周在天文学上有两大进展。
This week, there were two big developments in astronomical science.
youdao
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本周在天文学上有两大进展。
This week, there were two big developments in astronomical science.
youdao