银发经济：人口结构变迁下的十二万亿蓝海
Why are body doubles needed?
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course project, but also that it doesn’t even rate at all on the scale，更多细节参见PDF资料
Yes, a great deal. One of the characteristics of a Module is replaceability. With the right cohesion and explicit API and dependencies, it’s quite easy to - for instance - extract a module and move it to a separate application. It’s far easier to replace a module with a new implementation when you know that the whole process it’s responsible for is concentrated in one place.