Isotopes
n. 核素；同位素（isotope的复数）
🗣️ 情景例句
Thanks a lot.
多谢。
When the heart is full,, the tongue will speak.
胸有成竹，口若悬河。
'Mr.Eames,' he said, in a mournful voice, 'you have just killed that child!'
“埃姆斯先生，”他以悲伤的声调说，“你刚刚把那个小孩压死了！”