Plumbosynadelphite
铅砷镁锰矿
🗣️ 情景例句
Western countries have evry strict visa requirements.
在西方国家有严格的签证要求。
Could you hold the door open, please?
请让门继续开着好不好？
I am very well. Did you have a good summer holiday?
我很好。你暑假过得好吗？