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