Whatrole did marketing research play? No role.

市场研究又扮演了什么角色？

youdao

Did you use to play the piano? No, I didn't.

你过去弹钢琴吗？不，我不弹。

youdao

Did you use to play the piano? No, I didn't.

你过去弹钢琴吗？不，我不弹。

youdao