“无偿的”的英语可以翻译为：[法] gratuitous，voluntary，volunteer ...

我为你所做的一切都是免费的，无偿的，你明白吗？What I did for you was free, gratis, you understand?我知道他的帮助不会是无偿的。I knew his help wouldn't be given gratis.她和这地区每个农夫都无偿的搞过.Every farmhand in the region has enjoyed her for free....