YOU SAID:

So what were you talking about oh i meant photosintysis

INTO JAPANESE

何を言ってたんだ ああ、私は写真を意味しました

BACK INTO ENGLISH

What were you saying? Oh, I meant the pictures

INTO JAPANESE

何を言ってるの? ああ、私は写真を意味した

BACK INTO ENGLISH

What are you talking about? Oh, I meant the pictures

INTO JAPANESE

何のことをいっているのですか。 ああ、私は写真を意味した

BACK INTO ENGLISH

What are you talking about? Oh, I meant the pictures