crackerjack-
He 's a crackerjack at technical innovations .
他是个技术革新能手。
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On the one hand , Australia 's crackerjack fit with the Chinese economy is reshaping Australia 's trade and investment flows , drawing the country into a China-centred Asian orbit .
一方面，澳大利亚出产的好东西符合中国经济的需要，这促进了它的贸易和投资，将这个国家拉入以中国为中心的亚洲圈子。
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It was a crackerjack legal circus , with spectators getting in line at four in the morning , despite the subzero temperatures , to assure themselves of a seat .
这是一场出色的法庭秀，旁观的群众清晨四点钟就冒着零度以下的低温到法院排队，免得抢不到位子。