UVB radiation typically affects the outer layer of skin, the epidermis, and is the primary agent responsible for sunburn.

紫外线照射通常都会对最外层的肌肤(表皮)产生影响，而表皮往往就是最先会被晒伤的部位。

youdao

UVB radiation typically affects the outer layer of skin, the epidermis, and is the primary agent responsible for sunburn.

紫外线照射通常都会对最外层的肌肤(表皮)产生影响，而表皮往往就是最先会被晒伤的部位。

youdao