vt.
使(某人)确信(某事)；使信服，使相信：
Jack assured himself that they did as they were told.
杰克确信他们是按照要求的那样去干的。
[assure oneself]查明,确保,确实弄清楚：
She assured herself that no one was left on the bus.
她弄清楚没人留在公共汽车上。
使放心：
The news assured me.
这消息使我放心了。
向…保证：
I assure you I'll