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She really is on the ball; she's bought houses at auctions so she knows what she's doing.
她很精明干练；她通过拍卖购过房，所以知道自己在做什么。
《柯林斯高阶英汉双解学习词典》
2、
He was shrewd and clever in many little things, and capable of creating a good impression.
在许多小事上,他精明干练, 能够给人留下好印象.
英汉文学 - 嘉莉妹妹
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