4周搞定2000+托福核心词
fold = fold(倍) = 两倍的
fold = fold(倍) = 十倍的
三重的，三倍的
threefold
常考释义
The aims of these early grammarians were threefold: (a) they wanted to codify the principles of their languages, to show that there was a system beneath the apparent chaos of usage, (b) they wanted a means of settling disputes over usage, and (c) they wanted to point out what they felt to be common errors, in order to ‘improve’ the language.
这些早期的语法专家们的目的有三：把语言的原则编辑成法典，以证明在表面错综复杂的使用方法下隐藏着固有的体系；寻找关于解决不同用法争端的途径；指出他们认为的普遍错误，以便改进语言。
来源于：剑雅9-Test3adj. 三倍的
One survey revealed a threefold increase in breast cancer.
一项调查显示乳腺癌的发病率已是原来的3倍。
adj. 有三部分的；三重的
A threefold cord is not quickly broken.
三股拧成的绳子不易断。
adv. 三倍地；三重地
The population increased in number threefold.
种群的数量增加了三倍。
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