Electron beams and X-ray accelerators can both be used to irradiate various shapes and sizes of food, although X-rays are better at penetrating large items.
电子束和X光加速器都可以用来辐照各种不同形状和大小的食品，不过X光穿透大型食品的能力更佳。
UVA rays pass right through your car's side and back windows, penetrating your skin and eventually triggering fine lines, spots, and even skin cancer.
紫外线会穿过你车的侧窗、后窗，穿透你的皮肤，使之产生细纹、色斑甚至皮肤病。
Rays of the morning glow, penetrating the quaintly carved window lattice, little by little, put on a stroke of light make-up in golden yellow for the delicate potted landscapes in the courtyard.
晨光，透过古色古香的雕花窗棂，给庭院里精致的盆景慢慢地化上一抹金黄的淡妆。
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