Fractographic
a. 金属断面的显微镜观察的
🗣️ 情景例句
I had never been there before.
我以前从来没有去过那里 。
Providence is always on the side of the strongest battalions.
天公总是佑强者。
Why isn't Mrs. Lee's cat catching the mice?
李太太的猫为何不在抓这些老鼠呢？