YOU SAID:

I don't know what to say to describe the vast expanse of purple pants

INTO JAPANESE

広大な紫のパンツを何と言ったらいいのかわからない

BACK INTO ENGLISH

I don't know what to say about the vast purple pants

INTO JAPANESE

広大な紫のパンツについて何と言えばいいのかわからない

BACK INTO ENGLISH

I don't know what to say about the vast purple pants