YOU SAID:

Yeah, but it was super annoying listening to him whinge about it for two hours.

INTO JAPANESE

ええ、でも彼がそれについて2時間ぶつぶつ言っているのを聞くのはとても面倒でした。

BACK INTO ENGLISH

Yeah, but it was so annoying to hear him mumbling about it for two hours.

INTO JAPANESE

ええ、でも彼がそれについて2時間つぶやくのを聞くのはとても迷惑でした.

BACK INTO ENGLISH

Yeah, but it was so annoying to hear him mutter about it for two hours.

INTO JAPANESE

ええ、でも彼が2時間それについてつぶやくのを聞くのはとても迷惑でした.

BACK INTO ENGLISH

Yeah, but it was so annoying to hear him mutter about it for two hours.