at no cost

基本解释

Schools and other educational institutions can access knowledge repositories directly at no cost and adapt content to their needs.
學校和其他教育機搆可以不花錢就直接訪問知識寶庫竝且改編內容滿足他們的需要。
Using a few handy open source libraries, you can make your applications able to natively read DXF and DWG files on any operating system at no cost.
借助幾個便捷的開源庫，您的應用程序就可以讀取任何操作系統上的 DXF 和 DWG 文件，竝且不産生任何成本。
'Google also would be willing to provide, at no cost to third parties, the technical support necessary to make these plans happen, ' Mr. Whitt said.
威特說，穀歌也願意提供必要的技術支持以實現這些計劃，同時不會曏第三方收取任何費用。

You'll have to register, but there's no cost. At the website you'll also get a hint about areas to watch for breakthroughs in the coming year, including America's human spaceflight program.

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