两个孩子不能照射任何的紫外线光，否则他们极容易患上皮肤癌。
The boys could not be exposed to any ultraviolet rays, or they ran the risk of almost certain skin cancer.
然后用紫外线通过露光模板的光孔照射到印刷台的粘土层，以此塑造出需要的模型图案。
This layer is exposed to ultraviolet light through a mask that represents the required pattern.
首先通过观察实验发现在同一种紫外光分别照射真假币荧光标记时，反射光的颜色不同。
Different color of reflected light can be observed in experiments, when the same kind of ultraviolet light respectively irradiates the fluorescent mark of true and false currency.
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