第四纪

dì sì jì

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Definitions

  1. 1. fourth period
  2. 2. quaternary (geological period covering the recent ice ages over the last 180,000 years)

Child Words of 第四纪

四
sì

four

第
dì

(prefix indicating ordinal number, as in 第六[dì liù] \sixth\)

纪
jì

order