劍橋詞典from or referring to the period of time between about 22 and 2.5 million years ago, in which many modern mammals and the earliest forms of humans appeared 新第三紀(jì)的(迄今2200至250萬(wàn)年前間,許多現(xiàn)代哺乳動(dòng)物和早先形態(tài)的人類在這一時(shí)期出現(xiàn)) the Neogene period 新第三紀(jì)時(shí)期 Neogene rocks 新第三紀(jì)巖石 the Neogene noun [ 單數(shù)名詞 ] the Neogene period 新第三紀(jì)時(shí)期 返回 Neogene