radioisotope
n
radioactive form of an element, used in medicine, industry, etc to study the path and speed of substances through bodies and objects 放射性同位素.
🗣️ 情景例句
We appreciate your interest in our firm, however, and thank you for writing.
我们感谢你对我们公司表示的兴趣,谢谢你的来信。
What makes life dreary is the want of motive.
没有目的,人生就黯淡无光。
I'll also need a list of all your and her relations' addresses and telephone numbers.