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lunar day

noun
🔊/ˌluːnə ˈdeɪ/
🔊/ˌluːnər ˈdeɪ/
 (astronomy天文学)
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  1. the time it takes for the moon to go around the earth and pass the same point on the earth’s surface a second time (about 24 hours and 50 minutes)太阴日，月球日（月球绕地球转一周的时间，约 24 小时 50 分）Topics Timec2