Mr. Brownson, I assure you, King's an old enemy of mine.
布朗森先生，我向你保证，金是我的夙敌。
《柯林斯英汉双解大词典》
2
You won't repent of having told me, I assure you!
我向你保证，你不会后悔告诉了我的！
3
These symbols of distinction assure us and others that we believe strongly in the fundamental equality of all, yet strive as hard as we can to separate ourselves from our fellow citizens.