As an important part of the wetland ecosystem,the wetland vegetation biomass is a key index to weigh the healthiness of the wetland ecosystem.是什么意思_As an important part of the wetland ecosystem,the wetland vegetation biomass is a key index to weigh the healthiness of the wetland ecosystem.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句