The direction of luminiferous evacuation indicator is fixed in complex fire accident scene，that is difficult to play safe and effective role in the evacuation instructions.
发光型疏散
示牌
方向固定不变，在复杂火灾事故现场难于起到
全有效疏散示作用。
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
What Michelson and Morley did, without actually intending to, was undermine a long-standing belief in something called the luminiferous ether, a stable, invisible, weightless, frictionless, and unfortunately wholly imaginary medium that was thought to permeate the universe.
迈克尔逊和莫利所
， 
际上并没有打
这样，而是破
们对一种叫发光以太东西长期信念，这是一种稳定、不可见、无重量、无摩擦，不幸是，它完全是虚构介质， 被认为渗透到宇宙中。
工作者依靠现代
