我长大后就了解读书是很重要的。

Wǒ zhǎngdà hòu jiù liǎojiě dúshū shì hěn zhòngyào de.

After I grew up, I realized how important studying was.

其实我能了解为什么她那么生气。

Qíshí wǒ néng liǎojiě wèishénme tā nàme shēngqì.

Actually I can understand why she's so angry.

老板想了解一下为什么最近生意那么差。

Lǎobǎn xiǎng liǎojiě yíxià wèishénme zuìjìn shēngyì nàme chà.

The boss wants to understand a little better why business has been so poor recently.