trial flight短语¹⁴⁴⁹⁷²⁺² 基本例句 试验飞行 The first trial flight of supersonic airliner Concorde took place at Bristol. “协和”超音速飞机在布里斯托尔首次试飞。 iciba Blu, an orphan baby macaw, tests his courage with a trial flight. He is just ready to spread his wings! 金刚鹦鹉布鲁是个孤儿，他打算试飞一下以测试自己的胆量。他正准备挥动翅膀！ i21st