Fractographic
a. 金属断面的显微镜观察的
🗣️ 情景例句
Makes excuses.
找借口。
He is feeling the surface.
他在触摸着表面。
Sometimes were go upstream to a favourite backwater, sometimes we have our party at the boathouse,
有时，我们溯流而上来到我们喜爱的回水河汊举办；有时在船坞举办。