ground-level

WMO scientists assess and monitor air pollutants such as ground-level ozone, smog, particulate matter, sulfur dioxide and carbon monoxide.

世界气象组织的科学家对地面臭氧、烟雾、空气悬浮微粒子、二氧化硫、一氧化碳之类的污染物质进行评估监测。

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Autobots pulled free from the buried ship and got back to ground-level, Starscream attacked again.

红蜘蛛在汽车人终于爬出坠毁飞船、回到地面的时候发动了攻击.

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Although ground-level ozone is considered a harmful pollutant, the ozone layer in the stratosphere is beneficial.

尽管地表的臭氧被看成是有害的污染物, 但平流层里的臭氧层却是有益的.

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The word horizontal is applied only to the plane which is tangent to the ground-level equipotential surface.

地平面这个词则只表示与地面水准等位面相切的平面。

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