You need to add certain classes to the classpaths of the portlets.

需要将某些类添加到Portlet的类路径中。

youdao

They certainly don't for certain classes of non-production environments.

对于非生产环境来说，他们并 不需要有很高等级的服务。

youdao

Easily implementing certain classes of applications, including applications that draw on the fly.

轻松地实现某些类型的应用程序，包括动态建立的应用程序。

youdao

But it is also important to note that certain classes of workers have faced especially large negative effects from economic changes.

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For mobile devices or certain classes of SaaS applications, perhaps it will be sufficient to set some ground rules, observe activity, and test when possible that the rules are being followed.

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