上溯

wǒ men cóng zhè lǐ chéng chuán shàng sù dào běi jīng

我们从这里乘船上溯到北京。

We sail upstream from here to Beijing.

yǒu wén zì kě yǐ kǎo zhèng de zhōng guó lì shǐ kě shàng sù dào wǔ qiān duō nián yǐ qián

有文字可以考证的中国历史可上溯到五千多年以前。

China's written history can be traced back to over five thousand years ago.

zhè ge fēng sú kě shàng sù dào zhàn guó shí dài

这个风俗可上溯到战国时代。

The custom can trace to the time of the Warring States.

shàng sù zhì gōng yuán qián yī shì jì

上溯至公元前一世纪

trace back to the 1st century B.C.