vertical flight短语¹⁴⁴⁹⁷²⁺² 基本例句 垂直飞行 People anticipated that vertical flight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not fulfilled. 有人预言直升飞行运输会像今天的班机一样运送上千万的乘客，然而，这样的奇思妙想并没有得以实现。 jukuu