assurance
/əˈʃɔ:rəns; ?@ əˈʃuərəns; ə`ʃʊrəns/ n
1 (also self-assurance) [U]
confident belief in one's own abilities and powers 自信; 把握
act with, display, possess assurance 有把握, 有信心, 胸有成竹
She shows remarkable assurance on stage for one so young. 她小小年纪, 在台上却泰然自若.
2 [C] statement expressing certainty about sth; promise 保证; 担保
He gave me an assurance that it would be ready by Friday. 他向我保证星期五一定准备好.
Despite repeated assurances he failed to repay the money he had borrowed. 他尽管再三保证, 但是借去的钱却始终没还.
3 [U] (esp Brit) insurance, esp on sb's life 保险（尤指人寿）
a life assurance policy 人寿保险单.