n.旅游业；观光
Tourism was then still in its infant stage. 旅游业当时还处在初创阶段。
We should work on improving our tourism industry. 我们应该努力改进我们的旅游业。
Tourism is a major source of income for the people of Thailand. 观光是泰国人很重要的收入来源。
n.生态旅游
公益旅行
