| 单词 | ultraviolet (UV) rays |
| 释义 | ultraviolet (UV) raysDefinition Invisible solar radiation that lies just beyond the violet end of the visible spectrum in the wavelength range from 10 to 400 nanometers (just below the x-ray range) and can harm living tissue. Much of the UV radiation is absorbed by the ozone molecules in the upper atmosphere (stratosphere), but a potentially dangerous amount passes through the ozone hole to cause cataracts, skin cancer (melanoma), suppression of the immune system, leaf damage, and reduced yields in some crops. UV rays are generated also during electric (arc) welding. Use 'ultraviolet (UV) rays' in a SentenceThe ultraviolet rays were able to be lessened by the technological breakthrough in recent years by the worlds top scientists. Because I forgot to apply sunscreen before going outside for the company picnic on a sunny afternoon, the sun's ultraviolet rays gave me an unpleasant sunburn. You need to protect your eyes from any ultraviolet rays by wearing special sunglasses if you will be exposed to them. |
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