It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.
It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.
在你对文档副本进行大量再发布前取得与文档作者良好的联系，这虽然不是必须的，但是是有必要的，这样你就有机会得到他们提供的文档的最新版本。