cruising speed'kruːzɪŋ短语⁷²⁵¹⁶ 基本例句 巡行航速 飞机航空 However, air transportation is the most expensive mode of transportation, especially for the short-haul routes, say in Europe, where the economic cruising speed cannot be achieved. 然而，空运是最昂贵的运输方式，尤其是对于像欧洲这样的短途线路来讲，更是如此。到这些地方是不能达到经济航速的。 beidu.org