thick fog
collocation浓雾
The airport was closed due to thick fog.
机场因浓雾关闭。
雾；雾气
先理解核心含义，再看它在真实句子里的用法。
雾；雾气
a thick cloud of water droplets, smoke, or dust near the ground that reduces visibility
The thick fog reduced visibility to less than 50 meters on the highway.
浓雾使高速公路上的能见度降到不足50米。
贴近地面形成的浓密云层；这种云造成的朦胧。
A thick cloud that forms near the ground; the obscurity of such a cloud.
割草或放牧后田地上新长出的草
A new growth of grass appearing on a field that has been mowed or grazed.
悬浮在地面附近空气中的水汽滴
droplets of water vapor suspended in the air near the ground
使表面模糊的水汽或薄层。
A mist or film clouding a surface.
We had to wait for the fog to lift before the ferry could depart.
我们不得不等待雾散，渡轮才能出发。
A heavy fog settled over the city, muffling all sounds.
一场浓雾笼罩了城市，低沉了所有声音。
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Missing: Usage patterns
Complete this area with usage patterns.
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
浓雾
The airport was closed due to thick fog.
机场因浓雾关闭。
大雾
Heavy fog caused several accidents on the highway.
大雾导致高速公路上发生多起事故。
雾气消散
The fog lifted by midday, revealing a clear sky.
中午时分雾气消散，露出晴朗的天空。
大雾警报
The weather service issued a fog warning for the coastal area.
气象部门向沿海地区发布了大雾警报。
困惑；茫然
After the accident, he was in a fog and couldn't remember what happened.
事故发生后，他一片茫然，记不起发生了什么。
困惑；茫然
After the accident, he was in a fog for days.
事故发生后，他好几天都茫然不知所措。
战争迷雾；战局不明
The general had to make decisions in the fog of war.
将军不得不在战局不明的情况下做出决策。
混淆问题
Don't bring up irrelevant details that will just fog the issue.
别提那些只会混淆问题的无关细节。
雾踩着猫的小脚来了。
I saw the fog rolling in from the sea.
我看见雾从海面滚滚而来。
伦敦城的一个雾天
We had a foggy day yesterday.
昨天我们遇到一个雾天。
Use fog naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象 'FOG' 四个字母被浓雾包裹，什么都看不清。
fog 作为名词表示‘雾’时，通常用于描述天气，属于中性词汇，多用于日常对话和正式天气预报中。
fog常作不可数名词；表示‘一场雾’或‘某种雾’时可用于可数形式a fog，但少见。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.