预览版、测试版或其他预发行服务(“预览”)是世纪互联为了在正式发行前获得用户反馈而提供的服务的选择性评估版本。

Preview, beta or other prerelease services (" Previews ") are optional evaluation versions of the services offered by 21vianet to obtain customer feedback prior to general release.

youdao

例如，如果这两个本地谓词选择性没有优化器评估的强，怎么办？

For example, what if the two local predicates are not as selective as estimated by the optimizer?

youdao

公平而论，这只是评估基于规则的过滤器，而没有针对分布式黑名单做选择性的检查。

In fairness, this only evaluated the rule-based filters, not the optional checks against distributed blacklists.

youdao