尽管每一种自动化解决方案都需要涉及这三个步骤，但是由谁执行这些步骤、何时执行步骤以及同一个步骤执行多少次，这些问题都因具体的解决方案而异。
Though each of these steps is required, who performs the step, when the step is performed, and how many times the same step is performed varies with each automation solution.
一个好用的表单，需要解决这三个方面的问题。
For a form to be usable, all three aspects need to be tackled.
中文命名实体抽取的研究，存在分词、领域和方法三个方面的问题需要解决。
After summarizing and analyzing the state of the art on Chinese name entity extraction, we emphasize that three fundamental problems including word segmentation, domain, and method should be solved.
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