声障的英文：
sound barrier
Break the sound barrier,ie move faster than the speed of sound
突破声障(即以超声速飞行).
n. 声音；印象，感觉；录音；音乐风格；海峡，海湾
v. 发出声音；探测，试探；听起来；发出警报
adj. 健全的，完好的；明智的；酣畅的
adv. 酣（睡）
Sounding by sound is a sound method of sounding sounds.
声音测量是一种用声学探测声音的方法。
sounding survey
海底测深；水深测量
The advance was sounded.
进军号吹响了。
sound - absorbing material and sound - absorbingconstruction
吸声材料和吸声结构
A sound mind is inseparable from a sound body.
健全的精神是与健康的身体不可分割的。
n. 屏障，障碍物；栅栏；壁垒；界线
A weak barrier,defence,team
不结实的挡板、无力的防御、弱队
A train plowed into the barrier at the end of the platform.
火车撞上了月台尽头的栅栏。
As a result, no barrier can stop you.
结果，不再有障碍能阻挠你。
The Amazon basin is a huge barrier to commerce.
亚马逊流域是两国进行贸易的巨大障碍。
I don't understand why the knee is a barrier.
我不理解为什么非得以膝盖为界线。