关于用例的书已经出了不少，它们论述了用例的风格、深度以及细节。
Many books have been written about use cases, discussing style, depth, and detail for writing them.
只显示用户真正需要的信息但也要提供往细节深度挖掘的可能性。
Show only the information that users really need to see, but provide a possibility to dig deeper into details.
高智商，很强的记忆力，关注细节的能力以及深度关注的能力都是从事该工作的必备能力。
High intelligence, a strong memory, attention to detail and extreme focus are good traits to possess in the trade.
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