单词 缺乏活力 例句 DEFINITIVE EXAMPLES 权威例句〔dull〕Overall, they gave a well-drilled, but rather dull performance.总体而言, 他们的表演经过了精心排练, 却缺乏活力。外研社新世纪〔jump-start〕Informal The act or an instance of starting or setting in moti...