青云翻译

Physics class teacher about the content a bit more, only to hear a rough, but I

Physics teacher's content a bit more, to hear only an idea, but I

In the physical class teacher says the content are a little many, only can hear a general idea, but I

Physics lessons the teacher talk about the content, only a little bit more about this but I heard one of the

Physics teacher's content a bit more, to hear only an idea, but I