Spiking isotope
[化] 掺加同位素
🧩 词语组成解析
[化] 掺加; 掺加示踪剂
🗣️ 情景例句
That's five points.
五分。
I can't remember what John was doing yesterday afternoon.
我不能记得约翰昨天下午正在做的东西。
How was the exam, Richard?
考试考得怎样，理查德？