Celestobarite
锶重晶石
🗣️ 情景例句
You won't believe it, Grandpa,
你绝不会相信， 爷爷，
Judge not of men and things at first sight.
审人论事宜谨慎，一见之下莫断定。
Hello. You must be Dr Yang. How do you do? My name's David Lee.
嗨。你一定是杨博士吧。您好！我是大卫·李。