late 14c., from Old French asseurer (12c., Modern French assurer) "to reassure, calm, protect, to render sure," from Vulgar Latin *assecurar, from Latin ad- "to" (see ad-) + securus "safe, secure" (see secure (adj.)). Related: Assured; assuring.
实用例句
1. This may sound trivial, but I assure you it is quite important!
这听上去也许微不足道，但是，相信我，它十分重要！
来自柯林斯例句
2. He hastened to assure me that there was nothing traumatic to report.
他急忙向我保证没有什么不快的事情要说。
来自柯林斯例句
3. 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老冤家。
来自柯林斯例句
4. Can you assure me that my father is not suffering?
你能保证我父亲不会受罪吗？
来自柯林斯例句
5. He hastened to assure us that the press would not be informed.
