Secondly, set up air curtain at door of discharging platform to prevent efflluv-ium leakage when a trash truck enters.是什么意思_Secondly, set up air curtain at door of discharging platform to prevent efflluv-ium leakage when a trash truck enters.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句