Radioactive atom
[电] 放射原子
🧩 词语组成解析
🗣️ 情景例句
Good-bye, Robbie. Good luck.
再见 ，Robbie ，祝你好运。
I think it's going to take too much time.
我认为它将花太多时间。
He had known that it was not safe to travel alone in the forest near the coast.
也听说过独自一人在海边的森林里走是不安全的。