The new airplane flies twice the speed of sound.

这架新飞机的飞行速度是音速的两倍。

youdao

The aeroplane will travel at twice the speed of sound.

飞机将以两倍于音速的速度飞行。

《柯林斯英汉双解大词典》

Here the sheets of sound, downbeat accents, repetitions, and great speed are part of each solo, and the variety of the shapes of his phrases is unique.

在这里，一张张的声音、重拍的重音、重复和极快的速度是每个独奏的一部分，他的乐句形状的变化是独特的。

youdao

It enables the user to control the speed and sound levels of orchestral music playing on a computer.

VOA: special.2011.05.11

The first plane ever to fly faster than the speed of sound was the X-1 in nineteen forty-seven.

VOA: special.2010.07.07

It would reach hypersonic speeds -- five times the speed of sound.

VOA: special.2010.07.07

Their data showed that the speed of part of the condensate exceeded the speed of sound, and they had therefore made an acoustic event horizon.

ECONOMIST: Black holes on a desktop: Dumb insolence | The

They took photographs and used them to calculate both the speed of flow and the speed of sound within the condensate.

ECONOMIST: Black holes on a desktop

As a consequence, the D8.1 would cruise at Mach 0.72 (seven-tenths of the speed of sound) and the D8.5 at Mach 0.74, compared with about Mach 0.79 for a B737-800.

ECONOMIST: The aircraft of the future