劍橋詞典the activity of managing aircraft from the ground as they take off, fly , and land , or the people who do this 空中交通管制（人員）；空中交通調度（人員） Air traffic control at Heathrow have given us clearance to land in 20 minutes . 希思羅機場的空中交通調度人員已經(jīng)準許我們20分鐘后降落。 返回 air traffic control