曲线: curve, curved line, indirect, in a roundabout way...
无穷: endless, boundless, inexhaustible...
费: to cost, to spend, fee, wasteful, expenses...
爱面子: to like to look good in the eyes of others, sensitive about how one is regarded by others, proud...
样品: sample, specimen...
伤感: sad, emotional, sentimental, pathos...
苗条: (of a woman) slim, slender, graceful...