另一方面，在干旱和半干旱地区，湖泊数量少，湖泊之间距离远，减少了相互关联的可能性。

In arid and semiarid regions, on the other hand, the small number of lakes and the great distances between them reduce the possibilities for correlation.

youdao

注意“净”这个词：测量渗入湖泊和流出湖泊的地下水的实际数量是一个比仅仅推断它们之间的差异要复杂得多的问题。

Note the word "net": measuring the actual amounts of groundwater seepage into the lake and out of the lake is a much more complicated matter than merely inferring their difference.

youdao

而我们知道，出于我们对类似的古代沙漠湖泊的了解，我们知道这些湖泊并没有持续很长时间，平均从几个月到几年不等。

We know, because of what we know about similar ancient desert lakes, we know that the lakes didn't last very long, from a few months to a few years on average.

youdao

Anyway, the Black Sea is not a Greek lake, but there are Greek cities that are spotted along the coast.

不管怎样,黑海不是古希腊的湖泊,除了东海岸

耶鲁公开课 - 古希腊历史简介课程节选

They come up every now and then in springs and rivers and seas and lakes and things.

然而它们却时常出现,有时候是泉水，河流，大海或湖泊，或其他东西。

耶鲁公开课 - 旧约导论课程节选

He's interested in sailing and learns about sailing on lakes, and ponds, and rivers.

他喜欢航海,并在湖泊,池塘,河流里学习航行

耶鲁公开课 - 欧洲文明课程节选