1. 向……保证, 担保[(+of)][O5]
I can assure you of the reliability of the information.
The captain of the ship assured the passengers that there was no danger.
2. 使确信, 使放心[(+of)][O5]
We assured our clients of an enjoyable holiday.
3. (后接oneself)使弄清楚, 使确定[O5]
They assured themselves that the bridge was safe before crossing it.
4. 确保, 保障
Her future was assured.
vt.担保; 使确信; 确保
make certain promise
vt.向……保证; 使放心; 保障