Lectostratotype
选定标准地层剖面, 选层型
🗣️ 情景例句
Yes. And you must be Susan. Hi.
是的。 一定是Susan了。嗨
Now you are scared, aren't you?
怕了吧？
There are twenty-four boys, and twenty-two girls.
二十四个男生，二十二个女生。