this is not good and expensive

题目

this is not good and expensive
老师说翻译成“这东西不好,也不贵”是错误的,为什么?应该翻成什么

答案

我觉得这句话有歧义,你可以理解为
This is not good and not expensive 即 东西不好,但不贵
也可以理解为：
This is not good and this is expensive 即 东西又贵又不好.
个人倾向于第二种解释,但要看上下文,因为确实有歧义.