Tracer diffusion
[化] 示踪原子扩散
🧩 词语组成解析
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
🗣️ 情景例句
He's not faithful to his wife.
他对他的妻子不忠。
B.S. our leader invented the word?
“胡说八道”这个词是咱们领导创造的吧？
And when do you take your next exams?
还有，你什么时候参加下次考试？