注意“净值”这一词：测量地下水渗入并且渗出湖水的实际水量比仅仅推断出它们的差异要复杂得多。

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

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

youdao

Now the word theory has a very complicated etymological history that I won't trouble you with.

理论这个词的词源非常复杂,你们不需要了解。

耶鲁公开课 - 文学理论导论课程节选

They start using first words, first sentences, first complicated constructions.

他们同时使用第一个词,第一个句子,第一个复杂结构

耶鲁公开课 - 心理学导论课程节选

The trouble with the etymology of theory and the way in which the word has been used traditionally is that sometimes it actually means practice, and then at other historical periods it means something very different from practice, something typically from which practice is derived.

理论这个词在词源,和传统的使用方法上的复杂之处在于,它有时候指的是实践，但在特定的历史时期,它指的是和实践非常不同的东西，也就是实践产生的依据。

耶鲁公开课 - 文学理论导论课程节选