但是，最近的证据显示，这次大灭绝的形成时间很长。

Recent evidence suggests, however, that the end-Permian may have been long in the making.

youdao

埃迪·卡拉化石的发现，将动物的形成时间从寒武纪又推早了不少。

The Ediacaran fossil record thus stretches the origins of animals to well before the Cambrian Explosion.

youdao

他们认为其形成时间不迟于120万年前，比大多数科学家估计的时间都更早。

They date it no later than 1.2 million years ago - earlier than most scientists would estimate.

youdao

There's a big debate about whether this canon list was composed around the year 200 or around the year 400.

人们曾热烈争论过正典书目的形成时间,是形成于主后两百年还是主后四百年。

耶鲁公开课 - 新约课程节选

Now we're going to compare high glycemic index foods with low glycemic index foods, and so the curve of blood sugar with high glycemic index foods, those that create an exaggerated blood sugar response over a period of time might look like this.

现在我们要对高血糖指数的食物和,低血糖指数的食物进行对比,那些高血糖指数食物所形成的曲线,那些会在某段时间内产生过高血糖的食物,所形成的曲线看起来可能就是这样的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

One of the big arguments that is part of this story is when did this development of new way of fighting come about; rather quickly, over a matter of a few years, or did it stretch out over quite a long time.

人们对此最大的争议就在于,这种新型战斗方式是何时为军队所用的,是在短短几年内迅速发展起来的呢,还是在很长的一段时间逐步形成的呢

耶鲁公开课 - 古希腊历史简介课程节选