旅游业是该国经济的主要贡献者。

The tourism ___trade is a major contributor to the country's economy.

数字出版在过去十年里极大地改变了图书出版业。

Digital publishing has dramatically transformed the book ___trade in the last decade.

他在餐饮业已经工作了二十多年。

He has worked in the catering ___trade for over twenty years.