Radiological safety
[医] 放射安全
🧩 词语组成解析
a. 放射学的
🗣️ 情景例句
They hardly ever see each other.
他们几乎彼此不碰头。
When did you know the answer?
你什么时候知道答案？
Where were we?
我们说到哪儿了？