Baumhauerite
褐硫砷铅矿
🗣️ 情景例句
but I have work to do.
但我有工作要做。
Do you think you could keep the noise down?
你看能不能小声一些？
Why, you may wonder, should spiders be our friends?
你可能会觉得奇怪， 蜘蛛怎么会是我们的朋友呢？