1 PHRASAL VERB-ERG （使)(某地或某事）有生气；（使）变热闹 If a place or event livens up, or if something livens it up, it becomes more interesting and exciting. （使)(某地或某事）有生气；（使）变热闹
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How could we decorate the room to liven it up?. [VERB noun PREP.]
我们怎么才能把这房间装饰得更有生气呢？
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The multicoloured rag rug was chosen to liven up the grey carpet. [VERB PREP. noun]
选择这块五彩缤纷的碎呢小毯是为了给这灰色的地毯添些生气。
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The arena livens up only on Saturdays and Sundays when a flea market is open there. [VERB PREP.]
只有在周六周日跳蚤市场开市时，这片场地才会热闹起来。
2 PHRASAL VERB-ERG （使）（某人）愉快起来；（使）活跃起来 If people liven up, or if something livens them up, they become more cheerful and energetic. （使）（某人）愉快起来；（使）活跃起来
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Talking about her daughters livens her up. [VERB noun PREP.]
谈到她的女儿时，她的心情愉快起来。
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George livens up after midnight, relaxing a little. [VERB PREP.]
午夜过后，乔治来了劲，人也活跃起来。