1PHRASAL VERB-ERG 照亮;发亮 If you light something up or if it lights up, it becomes bright, usually when you shine light on it. 照亮;发亮 [Also VERB n PREPOSITION]
...a keypad that lights up when you pick up the handset. [VERBPREP.]
拿起听筒就会发亮的电话键盘
On September 5, at the end of the festival, a massive display of fireworks will light up the sky around Broadlands. [VERBPREP. noun]
3PHRASAL VERB 点烟;开始吸烟 If you light up, you make a cigarette, cigar, or pipe start burning and you start smoking it. 点烟;开始吸烟 [informal] [Also VERB n PREPOSITION]
He held a match while she lit up. [VERBPREP.]
他拿了根火柴为她点烟。
He took his time lighting up a cigarette. [VERBPREP. noun]