Is that something that can go for a semester or in the best of words for at least a year or more.

这种活动可以持续一个学期,乐观地说，至少可以一年甚至更长。

普林斯顿公开课 - 人性课程节选

Now, for myself, I'm sufficiently optimistic that I'm inclined to think life's wonderful.

现在，对我自己来说，我足够乐观地倾向于认为生命是美好的。

耶鲁公开课 - 死亡课程节选