Mean | The period of time during which Earth completes a single revolution around the sun, consisting of 365 days, 5 hours, 49 minutes, and 12 seconds of mean solar time. |
[Áß2] ÁöÇÐ | 1. I thought that the fall was the saddest time of the year. [9°ú] 2. About a year after the operation, however, I began to lose my sight again. [6°ú] 3. My history teacher says that it goes back as far as five thousand years ago. [10°ú] 4. I lost my sight when I was two years old. [6°ú] 5. Forest fires kill thousands of trees every year. [12°ú]
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