be certainbi:ˈsə:tn短语²¹⁸⁶⁶ 基本例句 🌏不确信；确定；肯定 In other words, prove your worth on paper and be certain to provide copies to those involved in the interview process. 换句话说，用书面形式证明你的价值，并且一定要在面谈过程中能够提供这些文件的复印件。 hjenglish So we can't be certain that these findings apply to other ethnic groups. 因此我们不能肯定，这些发现能不能适用于其他种族的人。 yeeyan