“tourism safety and security”的概念、定义、翻译、参考文献-科学参考

单词	tourism safety and security
释义	tourism safety and security Encyclopedia 理学旅游安全释 tourism safety and security旅游安全旅游系统（包括特定的社会行为主体或特定的旅游事物）可以容忍的风险程度。
随便看	Pollution damage assessment pollution discharge outlets pollution discharge permit system pollution ecology pollution export pollution exposure dose pollution exposure-response relationship pollution from tailings pollution halo hypothesis pollution haven hypothesis pollution indicator plant pollution indicator species pollution-intensive industry Pollution Load pollution of agricultural inputs pollution of motor vehicle exhaust gases pollution of natural water pollution prevention and control of key water basins pollution prevention law Pollution Probe Foundation，Canada pollution-resisting species of tree pollution rights trading market pollutions emitted from fossil-fired power plant pollution source pollution source census

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