我实在想不起来他的名字了。

I am simply unable to call to mind his name.

《新英汉大辞典》

我记得昨天我说的是'不行'，但是我实在想不起来是对谁说的了。

I remember yesterday I said 'no', but I really do not remember who said it is a.

youdao

牧师先生在尴尬的沉静中站了差不多10秒钟，竭力回想幽默的后半段，最后只好放弃，“……我实在想不起来她是谁了！”

After standing there for almost 10 seconds in the stunned silence, trying to recall the second half of the joke, the pastor finally blurted out, "... and I can't remember who she was!"

youdao