sound volume velocity

例句：

1. 1.Sound waves travel through the air at a constant speed, known as sound velocity.
   声波以恒定的速度穿过空气，称为声速。
2. 2. The sound of the ocean waves is propagating at sound velocity.
   海洋波浪的声音以声速传播。
3. 3. The sound velocity of sound in water is lower than in air.
   声音在水和空气中的传播速度不同。