certain [ˈsɜ:tn]
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基本释义
adj.一定的;pron.某几个,某些;肯定的,无疑的,必然发生的
英英释义
having no doubt or knowing exactly that something is true , or known to be true , correct , exact or effective
参考例句
She is certain to come. 她一定会来的。
It's not at all certain whether I'll come tomorrow. 我明天还不定来不来呢。
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