Zechstein
镁灰岩
🗣️ 情景例句
What university did you graduate from?
你从哪所大学毕业的？
You agreed that we could make a little change in design if necessary.
可你们曾经答应这，如有必要，图案可以稍作改动。
Did you enter the contest?
你参加比赛了吗？