crackajack
(a.)能乾的,傑出的,上等的能幹,傑出,上等
Crack·a·jack n. [Now usually spelled crackerjack.]
1. An individual of marked ability or excellence, esp. in some sport; as, he is a crackajack at tennis. [Slang]
2. A preparation of popped corn, candied and pressed into small cakes. [U. S.]
Crack·a·jack, a. [Now usually spelled crackerjack.] Of marked ability or excellence. [Slang]
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Crack·er·jack, a. [also spelled crackajack.] Of marked ability or excellence. [Slang]
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