用户的情况各不相同；他们有不同的角色和需求。
Not all users are equal; they have different roles and requirements.
访问你商店的顾客有不同的个性、需求、兴趣和预算，你得让他们穿了你的衣服显得更漂亮，这样回访率才更高。
The customers who visit your shop have different personalities, needs, interests and budgets, and it's up to you to make them look their best in your clothes so they come back for more.
患者想知道什么信息，我们当然就应该给他提供什么信息，但是不同的患者有不同的需求，而他们每个人处理信息的能力也不尽相同。
"Everyone should have access to as much information as they want, but different people do have different needs and can process different amounts," she says.
正好在您认为完成的时候，Doug 有了更多的客户，他们对狗门应该如何工作都有不同的需求！
Right when you think you're done, Doug gets more customers ... and they all have different requirements on how the dog door should work!
需求可以有不同的存在形式以及他们其中之一所衍生的其他需求。
Demand can exist in different forms and derived demand is one of them.
需求可以有不同的存在形式以及他们其中之一所衍生的其他需求。
Demand can exist in different forms and derived demand is one of them.
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