Matters have been brought to a head in the negotiation; tomorrow they will either succeed or fail.（谈判已经到了最关键时刻，明天不是成功就是失败。）bring something to a head表示事情到了必须作出决定的时刻。
Anyone who refuses to follow discipline must be brought to heel before he does lasting damage.（必须让任何不守纪律的人都乖乖听话，以免造成更大危害。）bring someone to heel意思是使某人服从。把狗儿牵到脚后跟前，狗儿就是一付听话的样子。
