In the case of a work of joint authorship, the term shall expire on December 31 of the fiftieth year the death of the last surviving author.

如果是合作作品，截止于最后死亡的作者死亡后第五十年的12月31日。

youdao

This AGREEMENT may be terminated by either PARTY without cause by giving the other PARTY 90 days written advance notice and shall expire on the 90th day after the date of such notice.

本协议可无需理由由任何一方经提前90天书面通知另一方而终止，并应在该通知发出之日后的第90天终止。

youdao