light up

phrasal verb

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light up | light something up

to become or to make something become bright with light or colour（使）光亮，放光彩
- There was an explosion and the whole sky lit up.一声爆炸照亮了整个天空。
- The night sky was lit up with fireworks.烟花照亮了夜空。
if somebody’s eyes or face light up, or something lights them up, they show happiness or excitement喜形于色；喜气洋洋
- His eyes lit up when she walked into the room.看见她走进房间，他两眼一亮。
- A smile lit up her face.她微微一笑，脸上露出了喜色。
Extra Examples
- Her face lit up with pleasure.她满脸喜气。
- Stacey's face immediately lit up.斯泰西立刻面露喜色。
(informal) to begin to smoke a cigarette开始抽烟
- They all lit up as soon as he left the room.他一离开房间他们就都抽起烟来。
- He sat back and lit up a cigarette.他往椅背上一靠，点上烟吸了起来。