Now, in some time in that period of the Dark Ages, and Hanson would suggest, I think, probably around the eighth century is the greatest transition.

有时候在黑暗时代,我认为汉森同样会表明,大概在八世纪,人类历史经历了最伟大的转变

耶鲁公开课 - 古希腊历史简介课程节选

I'm usually out early in the morning when it's still dark now because of the changing in the season.

我通常早上很早就出门，因为季节变换，那时天还是黑的。

中央公园的时光 - SpeakingMax英语口语达人

It's really a technology initiative that's aimed to index the "dark" web or the hidden web, because according to computer scientists, right now the conditional search engines only index about 1% of the information on the Internet.

这是一项,致力于将暗网,或隐藏网页纳入索引的技术创新，根据计算机科学家的统计，条件式的搜索引擎只将,互联网上1%的信息纳入了索引。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Now, that sounds dark to us, ominous.

可现在的我们听起来阴暗,坏兆头啊

耶鲁公开课 - 聆听音乐课程节选

Well, with the first movement we said he's generally going and that kind of idea, but now it's and we'll explore this when we get to harmony, this idea of major and minor so we're going music and now and that's a change from the dark minor to the brighter major.

在第一乐章,我们说过它大体上,就像这样,但现在,我们讲到和弦时再来研究这个,大调和小调的概念,我们继续听音乐,还有这个,这就是小调到大调间的转变,由阴郁转向明亮

耶鲁公开课 - 聆听音乐课程节选