It's often foggy
雾霾───smog;常常───often
In particular, greenhouse gases pose a greater threat than smog or burning rivers ever did.───尤其是温室气体构成的威胁比烟雾或河流燃烧更大.
We create ordered energy from oil and coal at the price of the entropy of smog.───我们从石油和煤炭里创造出有条不紊的能量,其代价却是烟雾造成的熵.
Then , the sunlight will no longer be blacked out by smog.───太阳再也不会由于烟雾的遮蔽而变得暗淡无光了.
Smog is a common occurrence in many major cities throughout the world.───世界上许多大城市常常起烟雾.
Another type of smog occurs in Los Angeles.───还有一类烟雾出现在洛杉矶.
A curtain of smog often hangs over big cities. It irritates the eyes and chest.───烟幕经常笼罩在大城市的上空, 刺激着人的眼睛和胸腔.
The smog is due to invisible gases, mostly from automobile exhaust.───这种烟雾是由一些看不见的气体, 其中大部分是汽车废气造成的.
Cars cause pollution, both smog and acid rain.───汽车引起污染，既有烟雾又有酸雨。
Smog is a major problem in Athens.