Gliding distance is an imperfect measure of an airliner's aerodynamic efficiency, since it is not designed for gliding.
其实滑翔距离并不能作为客机气动效率的评价手段，因为这不是它的设计初衷。
2
Announced and exhibited at the 2006 Photokina, this monster was designed and produced for a "customer with very high demands and a special interest in long distance wildlife photography."
Even in board daylight, with a police — designed travel route, it took three and a half hours for the bus to make it to our homes — a distance of only twenty miles.