glued to one's seat 非常专注于某件事情，集中注意力，一动不动

　　Mike's always glued to his seat during the class.

　　Mike上课的时候总是专心致志。

　　She is always glued to her seat when she reads books!

　　她看书的时候总是非常专心。

　　疯狂练习吧！