但是时期的划分并不是这样规整。

But periods aren't defined quite so neatly.

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占星家们管这段时期为一个大年，并且将其划分为12个大月或称之为占星学意义上“时代”，每一个时代持续2 147年，对应十二星座符号之一。

Astrologers call this period aGreat Year, and they divide it into 12 Great Months or astrological"ages", each about 2, 147 years long. Each age corresponds to one of thesigns of the zodiac.

youdao

显生宙可划分为三个时期——依次经历古生代、中生代和新生代。

The Phanerozoic is divided into three eras -starting with the earliest, these are the Paleozoic, Mesozoic, and Cenozoic.

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The use of purity and purity language to inscribe boundaries between Israel and other nations is very characteristic of the post-exilic period.

使用纯净和圣洁的语言,来划分以色列与其他国家的界线,就是流放后时期的一个特色。

耶鲁公开课 - 旧约导论课程节选

These would be the very earliest kinds of pots that have geometric designs on them, then comes the geometric period and the orientalizing period; all of these refer to pottery styles.

这些是非常早期的陶锅,上面有一些几何形的图案,之后是"几何时期"和"东方风格"时期,这些都是根据陶器的艺术风格划分的

耶鲁公开课 - 古希腊历史简介课程节选