Isotopes
n. 核素；同位素（isotope的复数）
🗣️ 情景例句
Where can I find the information desk?
咨询台在哪儿？
Fine. I'd like to reserve one for next Tuesday.
好。我想预定一辆，下星期二用。
She stands on dry land and is visited by thousands of people each year.
它停在陆地上，每年接待成千上万的参观者。