The co2 concertration increased quickly when the peak period of tourism with the massive tourist flow, which is good for Karst action , but the dark and higher moisture and lower temperature are harmful to workers health in the cavern.是什么意思_The co2 concertration increased quickly when the peak period of tourism with the massive tourist flow, which is good for Karst action , but the dark and higher moisture and lower temperature are harmful to workers health in the cavern.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句