“biting off a little more than you can chew" 意思?造句

咬过多一点，你可以嚼

贪多嚼不烂
Don't bite off more than you can chew.
贪多嚼不烂。
In trying to build a house by himself , he had bitten off more than he could chew.
他曾经试图独立造屋是不自量力的。
Ian said he would get it done by next Monday but I suspect he has bitten off more than he can chew.
伊恩说他将在下周一前完成任务，但我怀疑他自不量力。
He started to repair his car himself, but realized that he had bitten off more than he could chew.
他自己动手修车，但随即意识到力不从心。

硬翻的话意思是
比你能咀嚼的在多咬掉一点.
实际的意思就是自不量力那种.
I wonder if he is bitng off a little more than he can chew for heading the first place.