法国宇航公司与美国的超音速客机能够两倍音速和美丽看太多。

BAC's supersonic jet was capable of twice the speed of sound and beautiful to look at too.

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从标准跑道起飞，高超音速飞机能以5倍音速在两小时内出击在全球任何地点。

Launched from a standard runway, a hypersonic aircraft could fly faster than Mach 5 to strike anywhere in the world within two hours.

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然后，火箭发动机点火启动，飞船提速达到3倍音速，升入地球的大气层上空。

Then the Enterprise's rocket motors will ignite, accelerating the ship to three times the speed of sound, taking it up over the Earth's atmosphere.

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