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The cruising speed of this new type of fighter is Mach two.
这种新型战斗机的巡航速度为声速的两倍。
youdao
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The aim is to fly at about Mach 2, twice the speed of sound.
目标是以大约2马赫的速度飞行，也就是音速的两倍。
youdao
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The aim is to fly at about Mach 2, twice the speed of sound.
目标是以大约2马赫的速度飞行，也就是音速的两倍。
youdao