recollect

我不记得见过他。

I didn't ___recollect having seen him.

我清楚地记得曾建议你备份文件。

I distinctly ___recollect advising you to back up your files.

随着年龄增长，他几乎回忆不起童年的冒险了。

As he grew older, he could barely ___recollect his childhood adventures.