Gettering
采煤, 采掘工作, 收气, 吸气, 吸气法(真空技术)
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
What's the temperature today?
今天的温度是多少？
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。