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be sure about [英] [bi: ʃʊə əˈbaʊt] [美] [bi ʃʊr əˈbaʊt] [短语] 确信 ...;对 ... 有把握 词频排名 4773/55435 学习人数 5621 难度等级 5/10 认知比例 71.28% 例句 I am not sure about the answer. 我对这个答案没多大把握。 I am sure about his coming. 我确信他回来。 How can you be sure about that? 你怎么能确定那件事呢? 助记 对比 be sure of 指主语对某抽象事物的确信无疑 be sure about 指主语对某具体事物的确信无疑
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