These are also considered variable because you can cut back on how much you spend on these categories if you need to.
这些列为可变是因为一旦需要节省开支,这一类支出是可以改变的。
In real life, of course, these product categories would never live on the same site.
当然,在实际中,这些产品类别绝不会出现在同一个站点上。
These categories can, on a higher level, be grouped into pragmatic and hedonic attributes.
这些类别在大的方面可以被归类为实用主义和享乐主义属性里。
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