Radioactive isotope
[机] 放射性同位素
🧩 词语组成解析
🗣️ 情景例句
Harry's a professional camper, Mom.
Harry是露营专家，妈妈。
Riches serve a wise man but command a fool.
财富事智者，却又驭蠢人。
The circle dance meant that food was near.
圆圈舞表示食物在附近。