smog 四级GMAT高考考研

By afternoon the smog had lifted.

到下午气散尽

Smog obscured our view.See Synonyms at block

烟模糊了我们的视野参见 block

We were prevented by heavy smog from seeing anything.

浓使我们看不到任何东西。

urban problems such as traffic congestion and smog; the philosophical problem of evil.See Usage Note at dilemma

诸如交通拥挤和烟的城市疑难问题；关于罪恶的哲学难题参见 dilemma

The function of hydrocarbons and nitrogen oxides in photochemical smog formation and the formative process of ozone and peroxyacetyl nitrate are discussed.

介绍了氮氧物、合物在形成光学烟中的作用和臭氧、过氧乙酰硝酸酯产生的过程,并介绍了光学烟的形成机理。

Afterwards " fuliginous model " , " photochemical smog " after pollution, modern is being entered with " indoor air is polluted " the 3rd generation that is a mark pollutes period.

继“煤烟型”、“光学烟型”污染后，现代人正进入以“室内空气污染”为标志的第三代污染时期。