这涉及改变产品质量、特性或风格，以吸引新用户，或提升现有用户的使用率。
It involves changing product quality, features, or style to attract new users or more usage from present users.
能够查找和选择数据库中的现有用户。
The ability to look up and select from existing users in the database.
现有用户熟悉它，并在V 6中显著增强。
Familiar to existing users, and significantly enhanced in v6.
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