传回在指定纪元的指定年份中的日数。
每日数以万计的人流，蕴藏着无尽的商机。
Tens of thousands of people daily, and there are endless opportunities.
强降水日数的多、少与该年代降水量偏多、偏少的趋势相一致。
The days of heavy rain were in accordance with the amount of precipitation.
强降水日数的多、少与该年代降水量偏多、偏少的趋势相一致。
The days of heavy rain were in accordance with the amount of precipitation.
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