最近,苏联电视台播出了一条除航空专家之外在国外并不引人注意的消息:一架看起来十分普通的客机在莫斯科机场雷鸣般地起飞,其尾部排出的是凝结了的水蒸汽流,而不是通常所见的煤油烟雾。尽管西方对这次飞行很少公开表示关 Recently, Soviet television broadcasted a news that was not noticeable abroad except for aviation specialists: a seemingly ordinary passenger plane took off at the Moscow airport with thunderous motion, and its tail discharged a condensed stream of steam. Instead of the kerosene smoke that is usually seen. Although the West rarely publicly stated about this flight,