词典释义：
a thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface which obscures or restricts visibility (to a greater extent than mist; strictly, reducing visibility to below 1 km)
雾
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the collision occurred in thick fog. 碰撞发生在有浓雾时。
[in sing.]an opaque mass of something in the atmosphere
烟雾，尘雾
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a whirling fog of dust. 尘雾旋涡。
[in sing.]
〈喻〉 搅乱形势（或思维）的事
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the origins of local government are lost in a fog of detail. 地方自治的由来堕入细枝末节的云雾之中，难以考证。
【摄】 （底片等的）灰雾，雾翳。
cause (a glass surface) to become covered with steam
使（玻璃表面）起雾
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hot steam drifted about her ,fogging up the window. 她周围一片热蒸汽，窗玻璃也起了雾。
[no obj.](of a glass surface)become covered with steam
（玻璃表面）起雾
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the windscreen was starting to fog up .挡风玻璃开始起雾。
〈喻〉 使迷惑，使不解
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she stared at him, confusion fogging her brain. 她凝视着他，脑子里一团雾水。
〈喻〉 使（想法，形势）难以理解
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the government has been fogging the issue. 政府一直在搅浑这个问题。
【摄】 使（胶片，底片，照片）变得不清晰，使产生雾翳。
treat with something, especially an insecticide, in the form of a spray
用喷雾（尤指杀虫剂）喷。
the grass which grows in a field after a crop of hay has been taken
（割后）再生草。
long grass left standing in a pasture and used as winter grazing
过冬长草，冬牧草。
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in a fog in a state of perplexity; unable to think clearly or understand something 困惑不解，如坠五里雾中
"mid 16th cent.: perhaps a back-formation from
