Looking into the drawing room,she saw a scene of confusion over by her writing desk.

问题描述:

Looking into the drawing room,she saw a scene of confusion over by her writing desk.
这里的over by怎么理解,怎么一下用了两个介词?

over,是副词,意思是到处
by 是介词,意思是在傍边
全句话意思是:她朝画室望去,看见她的画桌旁边全是一派混乱场面