And while some ozone in the upper atmosphere helps shield us from ultraviolet rays, on the ground, this gas can form alongside secondary particles and create photochemical smog.

它们会发生反应，形成臭氧。虽然高层大气中的臭氧能帮我们阻挡紫外线，在地面，这类气体可能会和衍生性粒子一起形成，产生光雾。

You'd see a cloud of photochemical smog covering the planet.

你会看到一团光雾笼罩着地球。

First, we must verify the detection of phosphine itself, and then later, we would have to confirm that this gas is coming from life and not from some unexpected geological or photochemical process.

首先，我们必须验证磷氢本身的检测，然我们还需要确认这种气体是来自生命体而非某些意外的地质或光过程。

One possible explanation for this phenomenon is the hypothesis that the Sun's intense UV radiation triggers a complex photochemical reaction resulting in the formation of Neptune's clouds.

这一现象的一个可能解释是，烈的紫外线辐射触发了复杂的光反应，从而形成了海王星的云层。

Secondary pollutants found in photochemical smog can damage and weaken crops and decrease yield, making them more susceptible to insects.

光雾中的二次污染物能损害并削弱农作物， 减少产量，使其更易受虫害侵袭。

The infrared radiation emitted from a mammalian body has low quantum energy, which makes any photochemical effect on a pigment extremely unlikely.

哺乳动物身体发出的红外辐射具有较低的量子能量，这使得对颜料产生任何光效应的可能性极小。

Photochemical smog is strongest in urban areas with calm winds and dry, warm, sunny weather.

光雾在风平浪静、干燥温暖、光充足的城区最为烈。

Both industrial and photochemical smog combine man-made pollution with local weather and geography.

工业雾和光雾均结合了人为污染与当地天气和地理条件。

Photochemical smog and airborne particles from vehicle emissions affect many rapidly developing cities, from Mexico City and Santiago to New Delhi and Tehran.

光雾和车辆排放的空气颗粒物影响了许多快速发展的城市，从墨西哥城和圣地亚哥到新德里和德黑兰。