Digenite
蓝辉铜矿
🗣️ 情景例句
I'm sorry I missed him. I had to work late.
很抱歉我错过了他醒着的时候。我必须工作到很晚。
Do you think you could keep the noise down?
你看能不能小声一些？
Is the production line fully automatic?
生产线是全自动的吗？