与对所有人开放的免费公共图书馆不同，私人图书馆只能由被授权的读者使用。

Unlike free public libraries, which are open to everyone, private libraries can be used only by authorized readers.

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美国国家航空航天局的教育发射纳米卫星计划，为教育团体和科学任务提供免费发射，现在也对美国非盈利机构开放。

The NASA Educational Launch of Nano Satellite program, which offers free launches for educational groups and science missions, is now open to U.S. nonprofit corporations as well.

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美国宇航局的纳米卫星教育发射计划为教育团体和科学任务提供免费发射卫星的机会，其现在也对非营利性公司开放。

The NASA Educational Launch of Nano Satellite program, which offers free launches for educational groups and science missions, is now open to nonprofit corporations as well.

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They will be made available free to the public via the internet, so this is a way of allowing the world to benefit from what we all do at Yale.

它们会通过互联网向公众免费开放，这样全世界的人都能从耶鲁的课程中有所收获,我们要做的。

耶鲁公开课 - 1945年后的美国小说课程节选

This course is one of the seven courses chosen to begin the Yale University Open Educational Resourse Vidio Lecture Project And what's this means is, that when the year's over these vidioes well be on the internet, free for anybody who wants to see them.

本课程是"耶鲁大学公开视频课程计划",的七个实验课程之一,那么这也就意味着,在本年度结束时,所有的视频录像都会在网上,免费对所有人开放

耶鲁公开课 - 心理学导论课程节选