| 释义 |
sun·dialBrE /ˈsʌndaɪəl/ NAmE /ˈsʌndaɪəl/ noun a device used outdoors , especially in the past , for telling the time when the sun is shining . A pointed piece of metal throws a shadow on a flat surface that is marked with the hours like a clock , and the shadow moves around as the sun moves across the sky 日晷 |