YOU SAID:

I am learning Japanese on duolingo

INTO JAPANESE

私は二指腸で日本語を学んでいます

BACK INTO ENGLISH

I'm learning Japanese with my duodenum.

INTO JAPANESE

私は十二指腸で日本語を学んでいます。

BACK INTO ENGLISH

I am studying Japanese in the duodenum.

INTO JAPANESE

私は十二指腸で日本語を勉強しています。

BACK INTO ENGLISH

I am studying Japanese in the duodenum.