如果内容属于公共领域或在自由内容许可的范畴内，那么可能需要告知用户这一点。

If your content is in the public domain or under a free content license of some sort, it is probably even more important to let users know that.

youdao

除了百科全书、搜索引擎、公关，许多其他产业也会逐渐感到来自维基媒体诸项目组成的自由内容兵团的压力。

In addition to encyclopedias, search, and pr, a number of other industries are going to feel pressure from the free content behemoth of Wikimedia projects.

youdao

在世界各地各个知识宝库，存放几十万件内容，可自由获取，用于数千个小时的学习。

There are hundreds of thousands of pieces of content representing thousands of learning hours which are freely available in repositories all over the world.

youdao

It's a very broad and free flowing range of topics.

我们学的内容非常广泛和自由。

普林斯顿公开课 - 人性课程节选