N-COUNT An aircraft is a vehicle that can fly, for example, an aeroplane or a helicopter. 飞机
The return flight of the aircraft was delayed.
飞机的返回航程被推迟了。
Helicopters and other air craft the most essential distinction lies in its tilt-rotor system.
直升机与其他航空飞行器最本质的区别就在于它的旋翼系统。
When the Parrots hear the rival air craft upcoming they would inform everybody of the forthcoming hazard long prior to any human ear would hear it.
鹦鹉听到敌对飞行物飞来时，会提醒全体鹦鹉有危险，比人耳听到要早得多。
Rather than use either a spherical or a cigar-shaped aerostat, as the gas-filled envelope of a lighter-than-air craft is known, Skylifter has developed a discus-shaped one.
相对于我们熟知的球形或者雪茄形的内部充满轻于空气的高空气球，Skylifter开发的是一个铁饼状的。
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