Radioactive isotope
[机] 放射性同位素
🧩 词语组成解析
🗣️ 情景例句
I would prefer a non-smoking room.
我想要一间不许吸烟的房间。
To gain teaches how to spend.
量入为出。
Recent developments in astronomy have made it possible to detect planets in our won Milky Way and in other galaxies.
天文学方面最新发展使得我们能够在银河系和其他星系发现行星。