Radioactive isotope
[机] 放射性同位素
🧩 词语组成解析
🗣️ 情景例句
I'm so thankful to all of you.
非常感谢你们诸位。
I am not through with school yet.
我还没有毕业。
She was soon out of breath, but she continued to run.
只追了一会儿便上气不接下气了，但她还是继续追赶。