Fractographic
a. 金属断面的显微镜观察的
🗣️ 情景例句
My grandfather is very much alive and kicking.
我的祖父还健在。
Yes, we have done a little. But we have just started and have nothing to show you.
有，我们做了一些，但是因为我们才刚起步，并没有任何资料可以提供给你们。
Silicon Valley may prove a classroom for building a global business.
它很可能成为建立全球商业的一个教学场地。