问题
问答题
Now that Martin was aroused in such matters, he swiftly noted the difference between the baggy knees of the trousers worn by the working class and the straight line from knee to foot of those worn by the men above the working class.
答案
参考答案：
解析：马丁开始注意到这些。他很快发现劳工阶级的裤子膝盖处很松皱，而上层阶级的裤筒却笔直挺括。