be sure that

汉语翻译

例句：

1. Can we be sure that she's honest?
   我们能相信她是诚实的吗?
2. The teacher was sure that the boys were up to no good, because they ran when they saw her coming.
   老师确信那几个男孩子正在捣蛋，因为他们一见她过来，拔腿就跑。