Supersonic flight is about making the planet dramatically more accessible.

超音速飞机就是要让人们更容易地到达世界各个地方。

Ultimately, our goal is to make supersonic flight available to anybody who flies.

从根本上来讲，我们的目标就是要让任何飞行的人都能坐上超音速飞机。

Which means that supersonic flight's going to be a hundred percent carbon neutral.

这意味着超音速飞行将是百分之百的碳中和。

While supersonic flight is a technological achievement, the companies say it's really about saving people time.

虽然超音速飞行是一项技术成就，但两家公司表示，这实际上是为了节省人们的时间。

From scratch when it comes to making supersonic flight sustainable.

在使超音速飞行可持续发展方面从零开始。

And anyway, is there really still a market for supersonic flight?

无论如何，超音速飞行真的还有市场吗？

So disruptive that in 1973, the United States government, along with much of the world banned all civilian aircraft from supersonic flight over land.

其破坏性之大，以至于1973年，美国政府，和世界上许多国家都禁止所有民用飞机在陆地上空进行超音速飞行。

Because of these restrictions and other fuel and engineering requirements, supersonic flights turned out to be very expensive for both airlines and passengers.

由于这些限制以及其他燃料和工程要求，超音速飞行对航空公司和乘客来说都非常昂贵。

NASA has a program looking at sustainable fuels for supersonic flight, because that's going to be another requirement to truly make it a viable option in the future.

美国国家航空航天局有一个研究超音速飞行可持续燃料的项目，因为这将是未来真正实现超音速飞行的另一个必要条件。