Subject + 明白 + (了) / 明白 + Clause
明白 (míngbai) means 'to understand' or 'to be clear about something.' It is used both as a verb meaning 'to comprehend' and as an adjective meaning 'clear' or 'obvious,' and is very common in everyday conversation.
你明白我的意思吗?
Nǐ míngbai wǒ de yìsi ma?
Do you understand what I mean?
这道数学题我终于明白了。
Zhè dào shùxué tí wǒ zhōngyú míngbai le.
I finally understood this math problem.
他把道理讲得很明白。
Tā bǎ dàolǐ jiǎng de hěn míngbai.
He explained the reasoning very clearly.