通过这个信息，我们可以精确地计算出更新所需的成本。
Using this information, we were able to calculate precise costs for the update.
但是如果它来自信息记录，那它正是用所售出货物的成本计算出来的。
However, if it comes from the information record, it is the very cost of goods sold.
采用盲数来描述和处理这类不确定信息可以在最大程度的保留有效信息的同时，计算出更真实的成本。
Nevertheless, using the blind number theory to describe and deal with such uncertain information can calculate a more real cost while retaining the effective information to the utmost extent.
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