Microflaw
[化] 显微裂纹
🗣️ 情景例句
about your math teacher or your math homework.
你的数学老师或你的数学作业。
It is not work that kills,but worry.
工作不会伤身，伤身乃是忧虑。
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？