Who knows in how many unremembered nations' literatures this has been the Castalian Fountain?

谁知道，在多少篇再没人记得的民族诗篇中，这个湖曾被誉为喀斯泰里亚之泉？

If this is my day of harvest, in what fields have I sowed the seed, and in what unremembered seasons?

假如这是我收成之日，试问我曾在那块田地里播种？那又是在一种什么样已被遗忘的季节里？

Patients may not report difficulty sleeping, because brief interruptions in sleep often go unremembered in the morning.

病人也许不会报告说他们有睡眠困难，因为睡眠中简短的停顿往往在早晨的时候就不记得了。