I assure you that you will feel no pain at all.
我保證你根本不會覺得疼的.
assure:to tell sb that sth is definitely true or is definitely going to happen, especially when they have doubts about it 使確信;向…保證 ~ sb (of sth)
I know you think I did it deliberately, but I assure you (that) I did not.
我知道你認為我是故意干的,不過我向你保證不是故意的. VN (that)
We were assured that everything possible was being done.
我們確信是在盡一切努力.
She's perfectly safe,I can assure you.
我可以向你保證,她絕對安全.
We assured him of our loyal support.
我們使他確信我們始終不渝的支持.
adj. 確實的,保障的,有自信的 動詞assure的過