“旅游业”用英语怎么说？

波克先生现在从事旅游业。Mr Pok has now gone into the tourism business.这笔钱准备用于旅游业的开发。This money is intended for the development of the tourist industry.旅游业是该国外汇创收最多的行业。Tourism is the country's top earner of foreign currency....