•Tony is a tireless worker.托尼工作起来不知疲倦。

•The prisoner's family is conducting a tireless campaign for his release.这个囚犯的家人为了他能获释，正在不懈地进行活动。

•The police have been tireless in their search for the child's killer.警方一直不懈地搜寻杀害这个孩子的凶手。