第三人称单数：closes in 现在分词：closing in 过去式：closed in
1.围拢,迫近
2.(白天)渐短
1.to move nearer to someone, especially in order to surround them and stop them from escaping
2.if the weather closes in, it becomes unpleasant
3.if night or darkness closes in, it becomes night, or it gets darker
4.if the days close in, there are fewer hours of light each day because Fall is starting
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