certain [ˈsɜ:tn]以下由轻松背单词网站提供
单词级别第2级基本释义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。 推荐阅读 |