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词汇 Quaternary
释义
Quaternary
adjective geology specialized uk/kwəˈtɜː.nər.i/ us/ˈkwɑː.t̬ɚ.ner.i/
第四纪的(迄今约250万前至今的地质时间段,这期间现代人出现)
from or referring to the period of time from about 2.5 million years ago to the present, in which modern humans appeared
Layers of basalt, formed during the Quaternary period, extend from north to south and east to west.
Quaternary glaciation 第四纪冰川化
    更多例句
  • The earlier of the two geological epochs of the Quaternary period is termed the Ice Age in the northern hemisphere.
  • The group will investigate coastal processes and assess these in the context of late Quaternary and Holocene conditions.
  • Although Citlaltépetl is a Quaternary volcano with historic activity, it is at present in a dormant stage.
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