Rocklinizing
罗克林碳化钨表面硬化法
🗣️ 情景例句
Good night.
晚安。
Mary, this is Joe's brother David.
玛丽，这是乔的兄弟戴维。
It's on the edge of the lake that has been made by the Dam.
这座庙座落在由高坝形成的湖边上。