1. Walk a tightrope 冒险，走钢丝
You are walking a tightrope by putting all of your money in the casino.
你可真够冒险的，把所有的钱都投递赌场。
释义：
tightrope：绷紧的绳索
walk a tightrope：直译为在钢丝上走，比喻危险、惊险。
2. Walk out on 丢开不管
Jenny's B.F. is so cheap that he walked out on her when he heard Jenny caught lung cancer.
詹妮的男友真卑鄙，听说詹妮得了肺癌，他居然弃之不顾。
