"she paints with an assured hand"
"a tiny but assured income"
"we can never have completely assured lives"
I am assured of his honesty.
我确信他很诚实。
His work assured him a degree of happiness.
他的工作确保给他带来了一定程度的幸福感。
His work ensured him a degree of happiness.
该句的用法更为普遍。