over four thousand years ago 万年前
a thousand years ago 千年前 ; 一千多年前
ten thousand years ago 万年前 ; 一万年前
We lived on earth over a thousand years ago.
一千多年前,我们生活在地球上。
Paper was first invented about two thousand years ago in China by Cai Lun.
大约两千年前,中国的蔡伦首次发明了纸。
Qu-yuan was born around two thousand years ago in China.
屈原大约出生在两千年前的中国。
The earliest process of making paper was done almost five thousand years ago in Egypt and the Nile Valley.
VOA: special.2009.07.06
People moved into the American Southwest more than ten thousand years ago as the last ice age was ending.
VOA: special.2010.07.05
The Roman historian Pliny said that Phoenician sailors accidentally discovered how to make glass over three thousand years ago.
VOA: special.2009.09.16
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