Clausthalite
[化] 硒铅矿
🗣️ 情景例句
We'll come upstairs and get you in a little while.
我们待会儿就上楼来带你下去。
How many gallons are you going to take?
你要拿几加仑？
He has a bad cold,MR.Williams,
他得了重感冒，威廉斯先生，