certain of [英] [ˈsɜ:tən ɒv] [美] [ˈsɚtn ʌv] [短语] 确信...;一定 词频排名 10957/55435 学习人数 502 难度等级 6/10 认知比例 66.13% 例句 We are certain of victory. 我们一定会获得胜利。 I was certain of the facts. 我对事实确信无疑。 He acted as if certain of success. 他的举止就像一定会成功一样。(方式) 助记 联想 be sure of 确信