Chalcosiderite
磷铜铁矿
🗣️ 情景例句
At today's exercise class...
今天上健身课的时候……
Is that a car?
那是一辆小汽车吗？
He was obviously very nervous and for some minutes stood awkwardly before the microphone.
他显然非常紧张，局促不安地在麦克风前站了好几分钟。