You should never depend on the government to do this sort of stuff -- and we've done it for a long time. The NACA, before NASA, never developed an airliner and never ran an airline.
你从不应该依赖政府去做这种事业-- 而且我们已经从事了很长时间。美国航空资讯委员会，在美国国家宇航局之前， 从未开发过客机，而且从未运营过航空线。