never-ending

adj.

不断的，无止境的；无限的；没底的；

1. We must accept finite disappointment, but we must never lose infinite hope.
   我们必须接受有限的失望，但是千万不可失去无限的希望。
2. The tale spans eons and covers epic tragedies and jubilant victories that we may never know in EQ II.
   它横跨了无限的时间，包含了我们可能没有机会知道的史诗悲剧和胜利战役。

Toward an architecture for never-ending language learning
One molecule, many derivatives: a never-ending interaction of melatonin with reactive oxygen and nitrogen species?
Laccases: a never-ending story.
Plant nitric oxide synthase: a never-ending story?
Termination of logic programs: the never-ending story
At the roots of a never-ending cycle
Laccase: a never-ending story
Never-ending language learning
Catalytic synthesis of ammonia-a "never-ending story"?
Intracoronary brachytherapy: the death knell of restenosis or just another episode of a never-ending story?