groundhog day
柯林斯词典
1. N (in the US and Canada) February 2nd, when, according to tradition, the groundhog emerges from hibernation; if it sees its shadow, it returns to its burrow for six weeks as a sunny day indicates a late spring, while a cloudy day would mean an early spring (美国和加拿大)土拨鼠日; 二月二日
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