| 单词 | light up | 
| 释义 | light upphrasal verb1  of a light   : to become lit : to begin shining  All of the lights on the display suddenly lit up.—often used figuratively to express interest or pleasure  His eyes/face lit up when she walked in the room. 2  informal, of a telephone   : to show a light indicating that someone is calling  When the DJ announced a contest, the phones lit up. 3  informal   : to light a cigarette  I can't wait to light up after work. | 
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