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An aircraft powered by a conventional propeller and supported in flight by a freewheeling, horizontal rotor that provides lift.
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旋翼机在飞行中以常规的螺旋桨来驱动并靠惯性滑行支持的，提供升力的水平旋转仪 |
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An aircraft takeoff aided by an auxiliary jet or rocket.
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助飞用喷气机或火箭帮助航空器起飞 |
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An aircraft's aerofoils are shaped so that air travelling over their top surfaces moves faster than that underneath, creating an area of low pressure.
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一片小翼的形状可以是通过它上方的气流比通过它下方的气流速度更快，从而产生下压力。 |
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An airfield is a blue chip in the struggle for military supremacy.
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机场是军事优势争夺中的一张有利筹码。 |
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An airliner crashed west of Denver last night.
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昨夜一架客机在丹佛西边坠毁。 |
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An airmail is sent by plane.
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航空邮件由飞机寄送。 |
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An airmail letter to china normally cost50 cents, but this letter seem a bit thick.
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寄往中国的航空信一般是50美分，不过这封信好像厚一点。 |
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An airplane alighted on the airdrome.
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一架飞机在机场着陆。 |
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An airplane built to fly vertically as well as forward.
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垂直升降飞机一种既可向前飞亦可垂直飞行的飞机 |
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An airplane cannot fly out into space be cause it must have the air for its propellers to push against.
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飞机不能飞入太空，因为飞机的螺旋桨如果没有空气的反推力推进，是飞不起来的。 |
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An airplane engine is a complex mechanism.
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飞机引擎是种复杂的机械装置。 |
