He made a systematic study of the problem.

他对这个问题作了彻底的研究。

youdao

Don Gautier, who works for that agency, retorts that it has never done a systematic study of the Arctic, or put a figure on its energy riches.

在该机构工作的唐·戈蒂埃(Don Gautier)反驳说，该机构从来没有做过对北极地区的系统调查，或公布其能源财富的数字。

youdao

We haven't conducted a systematic study of this yet, so what I say is anecdotal for the moment, but there seems to be very widespread agreement about it, ” she says.

我们还没有对此现象展开系统研究，所以我说的这些目前只能算是轶事，但人们似乎对此已达成共识，”她表示。

youdao

I suppose what I'm really saying is that the word "hermeneutics" wasn't available, and the idea that there ought to be a sort of a systematic study of how we interpret things wasn't really current.

我想说的是“诠释学“这个词,不是一开始就有的，而应该系统地学习,如何解释事物,这种思想也当时也是没有的。

耶鲁公开课 - 文学理论导论课程节选

And it's in these years after his graduation from college that Milton embarks upon what is essentially a systematic study of all available knowledge. He commands a mastery of just about the entire canon of Western literary and historical learning.

就是在他毕业后的这些年里,弥尔顿开始着手系统的学习,方方面面的知识，他想要精通,整个西方文学和历史经典。

耶鲁公开课 - 弥尔顿课程节选

Don Gautier, who works for that agency, retorts that it has never done a systematic study of the Arctic, or put a figure on its energy riches.

ECONOMIST: The Arctic

While it would be a formidable task to check every study Wagenaar et al. subsumed in their meta-analysis, a quick check to find out whether they included a study with a known systematic bias reveals the study included Chesson et al., a study by the Centers for Disease Control which claimed that increased beer taxes could reduce the rate of gonorrhea.

FORBES: Pay More Tax And Cheat Death!

It will only be as a result of having a systematic large-scale study that we will be able to give accurate comments as to whether or not this does arise as a result of cloning or not.

BBC: Head-to-head: Cloning