Microcorrosion
显微腐蚀
🗣️ 情景例句
Hello, I'm honored to make your acquaintance.
你好， 认识你是我的荣幸。
I wrote to him last Friday.
我上个星期五写信给他。
That's OK.We really need the material.
没关系，我们急着要这些原料。