英语单词

词典成语诗词造句字典单词小说古文名言

Oligocene

英美 ['ɑlɪgo,sin]

n. 渐渐统；渐新世
adj. 渐渐统的；渐新世的

英文词源

Oligocene (adj.): 1856, "pertaining to the Tertiary period between the Eocene and the Miocene," coined in German (1854) by Heinrich Ernst von Beyrich, from oligo- "small, little, few" + -cene. So called because few modern fossils were found in Oligocene rocks.

双语例句

1. Oligocene erosion had truncated the sediments draped over the dome.: 覆盖于穹丘上的沉积岩为渐新世侵蚀所截削.

2. Beibu Wan Basin was a lake in the middle Eocence - Lower Oligocene.: 北部湾盆地在中始新世至早渐新世是一个湖泊.

3. There are four hydrocarbon source rocks, Palaeocene, Eocene, Oligocene and Miocene.: 西湖凹陷发育古新统、始新统、渐新统及中新统四大烃源岩系.

4. Paleogene Oligocene Linhe formation ( E _ 3 J ) and Eocene Wulate formation ( E _ 2 wl ).: 下第三系渐新统临河组 ( E_3l ),始新统乌拉特组 ( E_2wl ).

5. The differences between Oligocene series in the east and west are demonstrated.: 指出了盆地东部和西部渐新统存在的差异.