Plattnerite
块黑铅矿
🗣️ 情景例句
You've got yourself to think about, too.
也得为自己着想。
It is good to have friends in trouble.
在患难时得到朋友是幸运的。
It remained one of the most famous buildings in the world until it was burnt down in 1936.
在1936年被焚毁之前，它一直是世界上最著名的建筑物之一。