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
随便看	low-fat low-flying low gear low-grade low-key lowland lowlander Lowlands lowlands low-level low life lowlife lowlights lowly low-lying low-maintenance lowness low-paid low-pitched low point low-pressure low-profile low profile low-rent low-rise

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