🧩 词语组成解析
光滑的
🗣️ 情景例句
to read to the students--their own children, really.
共同为学生们， 其实就是他们自己的孩子， 朗读
Why are you so happy?
你为什么这样快乐？
He waited until the volcano became quiet and he was able to return two days later.
他等到火山平静下来，两天以后又返回去。