Steride
甾族化合物
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
It's her birthday and she wants to gives us all a treat.
这是她的生日，她要款待我们大家。
The students followed Uncle Wang to see the other machine.
学生们跟着王大叔去看另一部机器。