Rittingerite
砷硒银矿
🗣️ 情景例句
I'm ready. See you later, Marilyn.
我准备好了。Marilyn 再见。
I was born in China and brought up in the U.S.A.
我出生在中国，在美国长大。
You must weigh it carefully.
你必须仔细地称一称重量。