Examples
wǒ我pèng qiǎo碰巧zài在jiē shang街上yù dào遇到le了UnoUnoxiān sheng先生。
我碰巧在街上遇到了Uno先生。
It happened that I met Mr Uno on the street.
我在街上散步，消磨时间。
I strolled along the streets to kill time.
在网上勾人比在街上容易。
It is easier to hit on people on the Internet than in the street.