Beur
n. biologically effective ultraviolet radiation 具有生物效应的紫外辐射
🗣️ 情景例句
I've been there several times.
我到那儿去过好几次。
I cooked breakfast for the family.
我为一家人做早餐。
How do you do? I'm sorry. I know only a little English.
你好！很遗憾，我只懂一点英语。