A CFL cannot be simply installed in an incandescent fixture and then expected to produce a visual appearance that is more than washed out, foggy, and dim.
出自-2015年12月閱讀原文
Every animal sleeps, but the reason for this has remained foggy.
2017年高考英語北京卷 閱讀理解 七選五 原文
No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada mountains to the San Gabriels above Los Angeles.