If you are not a user of the existing environment, this is essential to ensure that no significant use cases have been overlooked.

如果您还不是已存在环境的用户，那么您要确保没有忽略重要的用例。

youdao

I'm not much of a user interface designer so I like to start with an existing project and tweak it.

我算不上是一名用户界面设计师，所以我希望从现有项目开始并调整它。

youdao

Typically, when a new organization is acquired, it is not possible to import all the user data from the existing LDAP server of the acquired organization.

通常，当收购一家新企业之后，无法导入所收购企业的现有 LDAP 服务器中的所有用户数据。

youdao

While the BB10 may help spur a replacement cycle inside of the existing user base, the real question is whether or not it can get iPhone and Android users to switch.

FORBES: An Apple Win Deals Another Blow to RIM's Blackberry