liven up 使有生气,活跃气氛 例句与用法: Liven up a party; a discussion that livened up. 使晚会气氛活跃; 使讨论激烈些 Do liven up a bit! 活跃些吧! 词形变化: 动词过去式: livened | 动词过去分词: livened | 动词现在分词: livening | 动词第三人称单数: livens |