基本解释[航空、航天科学技术]额外空勤组员英汉例句双语例句The additional crew member who will staff the open deck might prove an expensive luxury in austere times.而且在站台上工作所需要的额外的工作人员在困难时期确实非常奢侈。词组短语短语acm additional crew member 增补的乘员专业释义航空、航天科学技术额外空勤组员