I've been groping in the dark in a number of years.

多年来，我一直在黑暗中摸索。

youdao

David was only 4 years old, and was still afraid of the dark, so Mary left the hall light on when we slept.

大卫只有4岁，还怕黑，所以玛丽在我们睡觉的时候把大厅的灯开着。

youdao

But the ensuing 500 million years are the so-called dark ages of cosmology.

但是在宇宙学中间，接下来的500万年被叫做黑暗时期。

youdao

Another characteristic of these years, which scholars refer to as the Dark Ages, just as they do the years after the fall of the Roman Empire-- dark for two reasons. Dark, in the most obvious way, because we don't have any writing, no record of them.

这也是这段时期的另一个特征,学者们称之为,黑暗时代,他们也是这么称呼,罗马帝国陷落后的那段时期的,称黑暗主要有两个原因,黑暗,最明显的理由,是因为我们没有任何关于他们的史料和记录

耶鲁公开课 - 古希腊历史简介课程节选

They survived the dark years where all synths were digital and made in Japanese factories, and have undergone a resurgence in the last few years as the Internet brought in analog-hungry customers from all over the world.

ENGADGET: Music Thing: Paia Synth Kits

That kind of talk was common during what Iraqis call the "dark years" when the sectarian warfare was at its worst and al Qaeda and other extremists controlled swaths of the country.

CNN: Analysis: Baghdad weary amid pullout and death

In both registers, the first half of the book, from pre-history through the Dark Ages to the Hundred Years' War, is outstanding.

ECONOMIST: British history