n.保证, 确信, 自信, 保险
He made an unctuous assurance.
Marked by assurance, as of success.
They were waiting with assurance for me to discover the truth for myself.
The contractor gave assurances that the work would be completed on time.
3. 把握, 信心[U][+(that)]
They answered with assurance that it was against the rules.
4. 对自己才能的信心, 自信[U]
The teacher lacked assurance in front of his class.
5. 厚颜无耻[U][the S][+to-v]
He had the assurance to ask me for money.