Isotopes
n. 核素；同位素（isotope的复数）
🗣️ 情景例句
We have no collateral.
我们没有担保物。
You've got plenty of time. That's $7.65.
你还富有很多时间。请付7。65美元。
Please get those things off, sir, and throw them into the fire.
请把您身上那些东西脱下来吧，先生，把它们仍到火里去。