Radioactive isotope
[机] 放射性同位素
🧩 词语组成解析
🗣️ 情景例句
The name is Wang, and the number is 363-1127.
我姓王，电话是363-1127。
He is never alone that is in the company of noble thoughts.
思想崇高者，绝不会孤独。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。