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31. A murky mist of smog obscured the view of the city.

32. However, effective action would be limited while the cause of the smog remained unknown.

33. But George W.'s Houston has the worst smog in the country.

34. But smog obscures this view for all but a few days a year.

35. Eventually, smog-check stations are expected to electronically transmit smog certificates directly to the Department of Motor Vehicles.

36. Flagged motorists will be notified by mail that they must get a smog check and have their autos repaired, Kniestedt said.

37. Few authorities consider that short-term emission reduction options can prevent the first stage of a smog occurring.

38. This smog would blanket the cities for days.

39. Smog has thickened the air.

40. Smog is a mixture of smoke and fog.

41. Black smog reduced visibility to about fifty yards.

42. Smog clouded the whole city.

43. In fog and smog, you recondition my air.

44. A blanket of smog is covering large industrial cities.

45. 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.

46. The term photochemical oxidants refers to the secondary pollutants formed in photochemical smog.

47. Later, it was known as photochemical smog of this pollution.

48. Does the sun ever shine in this town , or is this smog always around?

49. Vast stretches of peat bog surrounding the city have dried out and caught fire covering Moscow with choking smog.

50. In London, Tokyo, New York and other cites, a weather condition called a temperature inversion allows smog to hang over the city for several days at a time.

51. A layer of smog can be seen above Manhattan through the Verrazano-Narrows Bridge in New York May 21, 2009.

52. The results show:(1) Inversion layer in the middle and southern of Huabei obstruct from the smog turbulence and diffusion on vertical, so that the smog can transport in a long distance.

53. The smog is so thick that you'd better wear a respirator.

54. The air is polluted with the smother of traffic and industrial smog.

55. And the smog from car's tail, how sportful breath is that! All these are not tasted in the countryside, and I like, I like all these very much.

56. Mercedes Cadillac and Toyota dealerships line the roads -- attesting to the personal wealth that has left the city's nighttime sidewalks chockablock with parked cars and its streets choking with smog.

56. Sentencedict.com try its best to gather and build good sentences.

57. When my family and I left China in 2004, we moved to Los Angeles, the smog capital of the United States.

58. In 1783, the Icelandic volcano Laki sent a sulphurous smog over Europe, plunging it into an extreme winter that killed thousands.

59. With an economy rooted in river transportation, steel, smelting, and the manufacturing of automotive parts, factory smog builds a haze over the city that virtually never dissipates .

60. Photochemical smog is found in many large cities all over the world.