“我是个幸运的人，本不配如此幸运，”他谦虚地说。"I'm a lucky man, undeservedly lucky," he said humbly.他们承认现在急盼幸运之神的降临。They admit they are now desperate for a lucky break.他们的成功是各种环境因素偶然联系在一起的幸运产物。Their success is the result of a fortuitous ...
Jets of compressed air gave the aircraft lateral and directional stability.压缩空气的喷吐使飞机的左右和前后都能保持稳定。Dish aerials are highly directional.碟形卫星天线的定向性非常强。The length of the fuselage was increased due to a degree of directional ...