Viscofrud
层流等溥氏数线
🗣️ 情景例句
We've got permission to go inside the old building
我们已获 进入那栋老建筑物
We went to a concert last night to hear the symphony orchestra.
我们昨晚去了一个音乐会听交响乐乐队演奏。
No, we aren't. The children go to a different school.
不是，两个去的是另外一个学校。