B2 觉得，有…的想法
to think that something is true, especially when it is not
I was under the impression (that) you didn't get on too well. 我感觉你们相处得不太好。
He was under the mistaken (= false) impression (that) you were married. 他误以为你结婚了。
I was under the impression that they wanted to ban cars.
Her parents were under the impression that she was doing well at school.
Most people were under the impression that he was joking, whereas in fact he was deadly serious.
See also: impression (OPINION)