perk up to improve or become more exciting 有所改善;有起色;变得更有趣 If something perks you up or if you perk up, you become cheerful and lively, after feeling tired, bored, or depressed. 如果某件事perk你up，或者让你perk up，那就是说你在感到疲倦、无聊或沮丧之后，变得开朗活泼起来。 When you say “ I’ll tell you a story about…” your audience will perk up. 当你说“我要给你讲一个关于......的故事”时你的听众立刻打起了精神。 Prices perked up slightly before the close of trading. 股票价格在收盘前稍微涨了一些。