Thus the Robert Frost estate benefits greatly from any extension of copyright, since no publisher would pay the estate any money if the poems Frost wrote could be published by anyone for free.

• 他的家族产业由此能得益于任何版权有效期的延续，因为如果弗罗斯特的诗歌能被任何人免费出版的话，没有出版商会给他的家族产业支付版税。