单词：ultraviolet lights
ultraviolet lights的用法和样例：
例句
- Under ultraviolet rays, oxygen is photolysis, thus producing ozone.空气中氧气在紫外光的照射下，发生光解作用，产生臭氧。
- When a gene is active in a particular cell type, the spot lights up under UV.当一种基因在某一类细胞中具有活性的时候，这一点在紫外光的照射下就会亮起来。
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