The letters, most of which are undated and not included in the collection that was published in 1994, span more than 20 years and cover a wide range of topics—artistic, literary and surreal.

这些信大多数没有签署时间，也没有出现在1994年出版的书信集里，书信内容涉及的范围很广——艺术、文学、超现实。

youdao

Still, efforts to roll back homework have been opposed by those who counter that there is not enough time in the school day to cover required topics and that homework reinforces classroom learning.

与此同时，减负的努力遭到了很多反对，反对者认为课内的时间根本不能照顾到所有的学习内容，而家庭作业可以巩固课间的学习效果。

youdao

There, you can post articles about IT topics that are too short or not polished enough to market to the paying IT webzines or that cover things their editors aren’t interested in publishing.

在那里，你可以发表篇幅太短或质地不够优良不足以发表到付费IT网络杂志上去的IT专题文章，或者一些编辑没有出版兴趣的东西。

youdao

But it's a philosophy class, and what that means is that the set of topics that we're going to be talking about in this class are not identical to the topics that other classes on death might try to cover.

但是它是一门哲学课，这就意味着,我们在这门课上要讨论的一系列问题,和其他讲死亡的课上讨论的问题,是不一样的。

耶鲁公开课 - 死亡课程节选