Lectostratotype
选定标准地层剖面, 选层型
🗣️ 情景例句
I'll miss my birthday party on Saturday.
就会错过星期六我的生日派对。
I'm sorry,but both of them are busy right now.
很抱歉他们现在很忙。
Would you like a drink ?
你们想喝点什么吗？