Rittingerite
砷硒银矿
🗣️ 情景例句
These are lucky kids.
这是一群幸运的孩子。
Who is the lady?
那位女人是谁？
He knew I collected match boxes and asked me whether my collection was growing.
他知道我收集火柴盒，于是问我收藏的米柴盒是否在增加。