据说它是美国关于儿童保育所开展的规模最大、研究时期最长，而且是最完整的一项研究。

It is said to be the largest, longest lasting and most complete study of child care in the United States.

youdao

下学期我们将研究一下二战时期。

Next term we'll be looking at the Second World War period.

《柯林斯英汉双解大词典》

但由于标志着当代学术研究的学科界限，针对该时期的史学家还没有充分利用文学批评。

Historians of the period have not, however, fully exploited literary criticism, due to the disciplinary boundaries that mark contemporary academic research.

youdao

Cuz I never thought frankly in those terms, but those were issues in the period I studied and particularly in the 17th century.

坦白讲，我从未考虑过这个方面，不过它确实是我研究的时期的问题,尤其是在十七世纪。

普林斯顿公开课 - 人性课程节选

This was the golden age of the consolidation of the literary profession.

这个时期,也是文学研究工作发展的黄金时期。

耶鲁公开课 - 文学理论导论课程节选

And we have in Ancient Near Eastern iconography thrones of this type.

在古近东时期的肖像研究中我们看见过这样的宝座。

耶鲁公开课 - 旧约导论课程节选