v. inform positively and with certainty and confidence
v. assure somebody of the truth of something with the intention of giving the listener confidence
vt. 保证, 使确信, 弄清楚, 担保
[法] 确信, 保证, 保障
1. I assure you that everything will be fine.
我向你保证一切都会好的。
2. The doctor assured her that the treatment was safe.
医生向她保证治疗是安全的。
3. Please assure me that you will arrive on time.
请向我保证你会准时到达。