In the case of trunk roads with very heavy traffic flows, street flushing is achieved through spraying pressurised water onto surface channels and central dividers.是什么意思_In the case of trunk roads with very heavy traffic flows, street flushing is achieved through spraying pressurised water onto surface channels and central dividers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句