threefold
[ˈθri:foʊld]
adj.& adv.
三倍（的）;
有三部分的，三重的;
例句:
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Rodent-related fines slapped on building owners soared threefold.
来自THETIMES
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One survey revealed a threefold increasein breast cancer.
一项调查显示乳腺癌的发病率已是原来的3倍。
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A threefold cord is not quickly broken.
三股拧成的绳子不易断.
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Thus the second - lowest energy level of the particle in a cube is threefold degenerate.
于是立方体中的第二最低能级是三重简并的.
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The right response to this is threefold.
来自THETIMES
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But SSE's complaint of a threefold increase in costs is hard to ignore.
来自THETIMES