你明白我的意思吗？

Nǐ míngbai wǒde yìsi ma?

Do you understand what I mean?

我希望你能明白我的感受。

Wǒ xīwàng nǐ néng míngbai wǒde gǎnshòu.

I wish you could understand my feeling.

我明白你说什么了。

Wǒ míngbai nǐ shuō shénme le.

I understand what you've said.