know what it is (like) to

to be familiar with how it feels to be or do something

了解…的感觉(或滋味)

She knows what it's like to go bankrupt - it happened to her 20 years ago.

她知道破产是什么滋味 — 20年前她就破产过。

We all know what it is to have pain in our heart, and we all know how important it is to heal.

我们都知道我们的心中有苦，我们也知道去疗伤有多重要。