Electronfractography
断口电子显微镜检验
🗣️ 情景例句
Your brother left his bag of film on the ferryboat.
你哥哥将他的旅行袋遗放在渡船上了。
What we learn with pleasure we never forget.
乐意学的东西决不会忘记。
No, by air.
不，坐飞机去。