His recollection of the campaign is not too clear.

他对记不清楚。

I have a vivid recollection of that old house.

我清楚地记得所旧房子。

I have many pleasant recollections of the time we spent together.

我有很多有关我们一起度过时光美好回。

I have a very sharp recollection of my last talk with him two years ago.

两年前我和他最后一次谈话情景仍历历在目。

After a few minutes' recollection she produced the answer.

经过几分钟回想，她给出了答案。

I have a dim recollection of it.

我依稀记得这事。

I have absolutely no recollection of the incident.

我对件事一点儿也记不起来了。

That evening is one of my happiest recollections.

天晚上我记中最快活事情之一。