teachers have eyes in the back of their head、in over my head、all ears这些习语是什么意思?

teachers have eyes in the back of their head眼观六路above/over sb.'s head1. 太高深而超出某人的理解力All that sort of thing is well above my head.那种事都是我所不懂的be all ears1. 全神贯注地听He was al...