Electronfractography
断口电子显微镜检验
🗣️ 情景例句
Yes?
什么？
I ask him to stay at home.
我要求他待在家里。
It seemed certain that she would be the first ship home, but during the race she had a lot of bad luck.
看来，它首先返抵英国是确信无疑的了，但它却在比赛中连遭厄运。