Some observers detect a whiff of greenwashing.

些观察人士察觉到了丝“漂绿(个组织展现出来表面或不诚恳关注环境表现)”味道。

The best way to describe it is maybe to refer to the word " greenwashing."

描述它最好方式可能是用“绿色清洗”这个词。

People should be aware that sometimes what is called 'ecotourism' may actually be 'greenwashing'.

人们应该意识到有时候所谓“生态旅游”实际是“伪环保”。