For permanent sound installations, architectural compatibility of primary importance, mounting points become critical.
对于永久音响设施，首要的建筑兼容性，安装点成为关键。
The louder the sound, the less time it takes to cause permanent injury.
声音越响，造成永久性损害所需的时间就越短。
Long range acoustic devices, or LRADs, emit sound waves loud enough to cause pain and permanent damage that could be directed towards the pirates.
长程音波设备(声弹)，简称为LRAD，发出声波的声音足够大以至于可以刺痛人并造成不可弥补的损害，这种设备可以用于阻止海盗。
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