supersonic/ˌsjuːpərˈsɒnɪk/

1.adjective

超音速的,超声速的

The Navy also needed a supersonic fighter.
海军也需要一架超音速战机。
A supersonic bomber flies so fast that it must release its bombs while the target is still over the horizon.
超音速轰炸机的速度非常快,它必须在目标还远在地平线上的时候就投放炸弹。
2.adjective

超声波的

If the operating frequency is supersonic, the valve operation should be inaudible to humans.
如果操作的频率是超声波的,那么人们是听不到阀门运转的。