在另一些情况下，比如存货，其投入和产出都是持续不断的。
In other cases, such as inventories, inputs and outputs are both continuous.
我们也将增加办公用品比如纸笔和钉书机的存货。
We will also increase stock of office supplies such as paper, pens, and staplers.
焦虑促使房主位财富建立“缓冲存货”，一般是现有正常收入的多重组合，比如针对意外的基金。
Anxiety leads them to build up a "buffer stock" of wealth, which will be some multiple of their normal income, as a hedge against misfortune.
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