Based on a contrast between APM system and other traffic modes, this paper evaluates the advantages of APM in respects of system cost, safety and reliability.是什么意思_Based on a contrast between APM system and other traffic modes, this paper evaluates the advantages of APM in respects of system cost, safety and reliability.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句