The Army has such arms as infantry, armor, artillery, air defense, Army aviation, engineering, chemical defense and communications, as well as other specialized units such as those of electronic counter-measure (ECM), reconnaissance and mapping.是什么意思_The Army has such arms as infantry, armor, artillery, air defense, Army aviation, engineering, chemical defense and communications, as well as other specialized units such as those of electronic counter-measure (ECM), reconnaissance and mapping.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句