assure
v.美 /əˈʃʊr/英 /əˈʃɔː/
使确信；保证
to tell someone confidently that something is true or will happen
例句
The teacher assured us the exam would cover only what we’d studied.
老师向我们保证，考试只考学过的内容。
He assured his parents he’d be home before midnight.
他向父母保证午夜前一定回家。
怎么记
as- + sure（确信）→ 使人确信
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