猫胖胖 资深人士 VIP 注册 2011-09-25 消息 12,414 荣誉分数 1,653 声望点数 273 2012-09-25 #4 stevenw 说: costco 点击展开... 那是习题集不是教科书吧:blink:
M mshu23 知名会员 注册 2005-09-20 消息 185 荣誉分数 18 声望点数 178 2012-09-25 #5 I would like to buy 2nd hand text book. it costs too much to buy new one.
