The patient with emphysema is hacking all day.

这个肺气肿病人整天不断地干咳。

He has had a hacking cough for weeks.

他常连续几星期地干咳。

It may also be referred to as "draining" (when exploring drains) "urban spelunking", "urban caving", or "building hacking".

它同样被称为“下水道探索”，“城市洞穴探险”，“建筑探险”等等。