Sievert
unit [核]西韦特单位(γ射线剂量单位)
🗣️ 情景例句
What's the meaning of NATO?
NATO代表什么？
She won a scholarship to the state university.
她获得就读洲立大学的奖学金。
Sorry. I had a little, but I don't feel like eating.
对不起。我吃了一点儿，我不想吃。