Radiopharmacy
放射性药物学
🗣️ 情景例句
What made you change your job so frequently?
为什么你经常转工？
When did I say that?
我什么时候说过了？
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。