crackerjack
n. 能力极强之人；极佳之物
异体字：crackajack
近义词：accomplished，shark，jimhickey，jimdandy，
英英释义
Noun
- someone excellent of their kind;
"he's a jimdandy of a soldier"
- something excellent of its kind;
"the bike was a jimdandy"
例句
用作名词(n.)
- He is a crackerjack at technical innovations.他是个技术革新能手。