| 词汇 | certain |
| 词根词缀 | 词源： c.1300, "determined, fixed," from O.Fr. certain, from V.L. *certanus, from L. certus "sure, fixed," originally a variant pp. of cernere "to distinguish, decide," originally "to sift, separate" (see crisis). Certainer, certainest were common to c.1750, but have fallen from proper use for some reason. 词根记忆： a. 确实的,肯定的,必然的;某个,某些There might be a certain bug in the machine.机器里面可能有些毛病. 肯定的(cert+ain→搞清楚的→肯定的)[cern,cert,cret=sure,separate,表示"搞清,区别"] |
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