该时期的任何文献中都没有提及他们的存在。

No reference to their existence appears in any literature of the 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

对于日耳曼部落首领在罗马军队中获得高地位的不满和罗马领导人之间的党派之争是该时期局势剧烈动荡的一部分原因。

Resentment against Germanic chieftains achieving high rank in the Roman military and factionalism among Roman leaders were among the causes of the period's considerable instability.

youdao

You would first get exposed in children-- in childhood and then at a point when you're susceptible to the disease.

在儿童期这个较容易受病毒感染时期,第一次接触该病毒,就会引起发病

耶鲁公开课 - 生物医学工程探索课程节选

There's a lag phase, there's a slow rise to an intermediate level of antibody.

会有迟滞期,在该时期,抗体浓度缓慢到达中间水平

耶鲁公开课 - 生物医学工程探索课程节选

In the second half of the twentieth century and up now into the twenty-first century, writers were thinking very hard about what to do stylistically with all the innovations that come in that powerful period known as modernism.

自二十世纪下半叶,直至现今二十一世纪,作家都在努力思考在现代主义影响,深远的这个时期里该怎样进行文体上的创新。

耶鲁公开课 - 1945年后的美国小说课程节选