You also need to have good knowledge of user experience design.

第二，熟悉用户体验设计（UX）。

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For a user without any real knowledge of his data, this might be difficult.

若用户对其数据知之甚少，这可能会很困难。

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For a user without any real knowledge of his data, this might be difficult.

若用户对其数据知之甚少，这可能会很困难。

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