if my memory serves me right

(also if memory serves)

used for saying that you think you have remembered something correctly

用来表示你认为你已经正确地记住了某事;如果我没记错的话

If my memory serves me right, it happened in the winter of 1927.

如果我没记错的话，这件事发生在1927年的冬天。

I think he was called Blake, if my memory serves me right.

如果我没记错的话，他叫布赖克。

If memory serves, we should turn left here.

如果没记错的话，我们应该在这里左转。