ADJ-GRADED [verb-link ADJ]没有留下深刻印象的；不以为然的 If you are unimpressed by something or someone, you do not think they are very good, clever, or useful. 没有留下深刻印象的；不以为然的
He was also very unimpressed by his teachers. [+ by]
他对他的老师也很不以为然。
Graham Fletcher was unimpressed with the idea of filling in a lengthy questionnaire. [+ with]