英语词汇“Johnny-on-the-spot”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	Johnny-on-the-spot
释义	Johnny-on-the-spotˌJohnny-on-the-ˈspot noun [singular] informal someone who immediately offers to help, takes an opportunity, etc.
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