He suggests choosing a broad-spectrum sunscreen, which blocks both types of UV rays, UVA and UVB, with an SPF of at least 30.
选择一款能够阻挡UVA和UVB两种射线的广谱防晒产品吧，切记SPF值要至少达到30以上。
A lightweight nylon that blocks the sun's UV rays because of the densely constructed fine yarns.
一种较轻的尼龙，能够阻拦紫外线。因为它使用很细的纱线密织而成的。
A lightweight nylon that blocks the sun's UV rays because of the densely constructed fine yarns.
一种较轻的尼龙，能够阻拦紫外线。因为它使用很细的纱线密织而成的。
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