YOU SAID:

the pirates are singing and dancing, they are also drinking milk, for some reason.

INTO JAPANESE

海賊たちは歌ったり踊ったりしていて、なんらかの理由で牛乳も飲んでいます。

BACK INTO ENGLISH

The pirates sing and dance, and for some reason also drink milk.

INTO JAPANESE

海賊たちは歌って踊り、そして何らかの理由で牛乳も飲む。

BACK INTO ENGLISH

The pirates sing and dance, and for some reason also drink milk.