Rdl
[医][=radiological defense laboratory]放射防护实验室
🗣️ 情景例句
Sometimes he's very sad.
他有时很忧悒。
What track does the Metroliner leave from?
华纽特快从第几轨道开出？
He doesn't like writing letters, but he likes receiving them.
他不爱写信，但他却喜欢收到信。