YOU SAID:

It was only when I bought a motorbike that I found out that adrenaline is brown.

INTO JAPANESE

アドレナリンが茶色であることを知ったのは、バイクを買ったときだけです。

BACK INTO ENGLISH

The only time I learned that adrenaline was brown was when I bought a motorcycle.

INTO JAPANESE

アドレナリンが茶色であることを知ったのは、バイクを買ったときだけでした。

BACK INTO ENGLISH

The only time I learned that adrenaline was brown was when I bought a motorcycle.