Gettering
采煤, 采掘工作, 收气, 吸气, 吸气法(真空技术)
🗣️ 情景例句
Nice whether we are having.
天气真好。
Sound in body, sound in mind.
有健全的身体才有健全的精神。
The two brothers look very much alike.
这兄弟俩看上去很相像。