当我们很确信一件事情的时候，通常会用 "sure" 或是 "certain" 来表达，今天我们再补充一个更加正式的关于“确信”的英文表达。
Word of Today:
safe the in the knowledge that
确信，料定
Definition:
Confident because you know sth. is true or will happen.
Examples:
1. You can let your kids play here, safe in the knowledge that they won't get sunburn.
你可以放心让孩子们在这儿玩，他们肯定不会晒黑。
《柯林斯高阶英汉双解学习词典》
2. They continued their campaign, secure in the knowledge that the police were powerless to stop them.
他们继续他们的活动，因为知道警察无力阻止他们。
摘自macmillandictionary
3. She went out safe in the knowledge that she looked fabulous.
她确信自己打扮得无可挑剔后才出门。
摘自Oxforddictionaries
4. You can open the spin dryer door safe in the knowledge that the drum has stopped rotating.
在确定滚筒停止转动后，你才可以打开烘干机的门。
摘自wiktionary
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