他们可能想知道他们购买的产品是否以生产人员的利益为代价，不管是本国的还是国外的。
They may want to know that the product they're buying hasn't been made at the expense of the people who are producing it, whether it's in this country or abroad.
这样做的好处是带来更加丰富的客户体验，但却以增加复杂度为代价。
The upside is a richer user experience, at the cost of complexity.
以一些CPU周期为代价来优化内存用法通常是可能的，反之亦然。
It is often possible to optimize memory usage at the expense of some CPU cycles, and vice versa.
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