Recycling firms are the obvious exception, but even they deal in a variety of goods whose prices do not always move in lockstep.
循环回收公司明显是个例外,但是他们处理的物品许多不再这个连锁的处理过程之内。
The question is whether these trends undermine the quality of books which are being published, by breaking a business model that has let firms focus on variety and range.
问题是破坏企业专注于多样化和范围的商业模式的趋势,是否会降低出版图书的质量。
A wide variety of designs for vertical farms have been created by architectural firms.
建筑公司绘制了大量垂直农场的设计图。
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