rare and endangered tree species
... endangered bird species 濒危鸟种 rare and endangered tree species 珍稀濒危树种 Rare and Endangered Plant Species 珍稀濒危植物 ...
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rare and endangered tree species
珍稀濒危树种
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The situation of the rare tree species being threatened by the pollution substances is investigated. The endangered mechanism and its symptoms are analyzed. The protection measures are proposed.
对成都市的主要古树名木被环境污染物质危害的现状进行实地调查，从受害症状入手，对受害机理作分析，并提出保护古树名木的具体措施。
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