Go through primary, secondary, tertiary, quaternary.

- 经小学、中学、大学、四年级。

That's the warmest temperature on Earth during the entire Quaternary.

这是整个第四纪以来地球上最高的温度。

Originally, geological history was divided into four spans of time—primary, secondary, tertiary, and quaternary.

最初, 地被分为四个时间跨度 - 初级, 二级, 三级和四级。

Therefore the genuineness of a fossil human relic of the quaternary period seemed to be incontestably proved and admitted.

因此，第四纪人类迹化石的真实性似乎已得到无可争议的证明和承认。

In a recent paper of his own he tried to calculate how many stable crystals incorporating four chemical elements (so-called quaternaries) might be potentially manufacturable.

在最近的一篇论文中，试图计算有多少含有四种化学元素的稳定晶体(所谓的季盐化合物)可以被制造出来。

In some books, too, you will find the tertiary and quaternary taken out and replaced by periods of different lengths called the Palaeogene and Neogene.

在有的书里，你还会发现不用第三纪和第四纪，而是用不同长度的系来取而代之，称做下第三系和上第三系。

In some books, too, you will find the tertiary and quaternary taken out and replaced by periods of different lengths, called the Paleogene and Neogene.

在一些书中, 你会发现第三纪和第四纪被取出, 取而代之的是不同长度的时期, 称为古近纪和新近纪。

The fossil is estimated to date back to a time between the late Middle Pleistocene and the Late Pleistocene of the Quaternary period, between 200,000 and 10,000 years ago.

化石的估计年龄介于更新世晚期和晚更新世之间， 时间范围是20万年至1万年前。