1.lost count 弄不清楚 2.be in another world 精神恍惚,魂不守舍 3.make yourself at home 随意,随便 4.save your breath 省口气吧,别白费口舌 5.make sense 有意义,理解 6.cost sb. an arm and a leg 非常昂贵 7.burn a hole in one's pocket 很快被花光 8.fill one...