Therefore, programmes involving the conservationandpreservation of some natural and cultural sites also form a part of ecotourism.
因此,涉及保护和保存一些自然和文化遗址的项目也成了生态旅游的一部分。
2
Western people highly value conservationandpreservation of the environment as a tourist attraction. I suggest that there are some things that can be done to improve their experience.
许多国外的游客重视环境的保护,因此这里也有必要做一些这方面的工作来增加外国游客在这方面的感受。
3
Restricting conservationand cryopreservation are two main methods of plant germplasm in vitro preservation.