螺旋輥

Any of various winged vehicles capable of flight, generally heavier than air and driven by jet engines or propellers. 飛機各種能夠飛行的帶翼交通工具，通常比空氣重，用噴氣式發(fā)動機或螺旋槳驅(qū)動

An airplane cannot fly out into space be cause it must have the air for its propellers to push against. 飛機不能飛入太空，因為飛機的螺旋槳如果沒有空氣的反推力推進，是飛不起來的。