Ozone provides a natural protective filter against harmful ultra-violet rays from the sun, which can cause sunburn, cataracts and skin cancer as well as damage vegetation.
臭氧提供天然的保护，防止太阳的有害紫外线的侵害，这种紫外线会导致晒斑，白内障，皮肤癌以及危害植物。
Natural vegetation in Xiaolongmen and adjacent areas can be used as the reference standard of health assessment for they are preserved well, have rational structure and rich species.
小龙门林场及毗邻地区的天然植被保存良好，结构合理、物种丰富，在进行森林健康评价时，可作为健康标准的参考之一。
The natural vegetation is well developed in forest landscape area, Great Xing′an Range.
大兴安岭地区为森林景观区，植被十分发育。
The natural vegetation is well developed in forest landscape area, Great Xing′an Range.
大兴安岭地区为森林景观区，植被十分发育。
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