Qpo
拟周期振荡
🗣️ 情景例句
He is not cut out for teaching.
他不是当教师的料。
Have you seen the doctor?
你看过医生了吗？
Mrs.Richards sent her children to school and went upstairs to her bedroom.
把孩子送去上学，然后来到楼上自己的卧室。