生态环境与民族习俗文化的关系十分密切。

There is a close relationship between the ecological environment and the national custom culture.

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而生态旅游可能与以上的各种旅游都有点关系。

Ecotourism probably involves a little of all of them.

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森林“病害”是森林生态系统中生物之间食物链关系的一种自然现象。

Forest disease is a kind of natural phenomenon between living things in food chain.

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森林“病害”是森林生态系统中生物之间食物链关系的一种自然现象。

Forest disease is a kind of natural phenomenon between living things in food chain.

youdao