| 单词 | sub-age | 
| 释义 | > as lemmassub-age   sub-age  n.  Brit. , U.S.  ΚΠ 1855    C. Martel tr.  P. Flourens On Human Longevity  i. ii. 24  				It is not easy to determine the precise duration of each of these ages and sub-ages [Fr. sous-âges]. 1878    J. N. Lockyer Stargazing 2  				The Telescopic age..divides itself naturally into some three or four sub-ages of extreme importance. 1953    Ecol. Monogr. 23 306/2  				The next oldest interglacial subage is the Peorian, to which the bottom organic layer has been assigned. 2006    K. D. Rose Beginning Age Mammals i. 16/2  				Three additional Paleocene land-mammal ages or subages are now recognized that precede the classic late Paleocene Riochican: Itaboraian, Peligran, and Tiupampan. < as lemmas | 
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