• 1. by air: 通过航空途径 | 乘飞机 | 飞机
• 2. by air mail: 寄航空邮件 | 航空邮寄 | 信汇 | 寄
• 3. By Air-Mail: 航空

更多释义

• 1.The pilot was given clearance to land by air traffic control.
  飞行员得到空中交通管制站发出的着陆许可。
  dict.yoduao.com
• 2.He invented something special that was pushed along by air.
  他发明了一种很特别的东西，它可以由空气推动。
  dict.yoduao.com
• 3.Superb systems of communication by air, sea and land make it possible for us to visit each other's countries at a moderate cost.
  有了一流的空中、海上和陆地交通系统，我们就能够以低廉的费用访问彼此的国家。
  dict.yoduao.com

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