Hi Friend: 明白is to understand a difficult thing. It feels like you need some time to figure it out. e.g. I don’t 明白 why he made that decision. I finally明白了 the difference between A and B. 了解is more obvious. It’s like to say you’re familiar with someone or something. Or you have a general idea. e.g. I 了解 Shanghai. So, what do you think the slight difference is between these two sentences? A: I don’t 明白 the boss’ decision. B: I don’t 了解 the boss’ decision. A means you know the result, but you don’t understand why it was made. So it may also imply you don’t agree with it or you need some time to think about it thoroughly. B is simply to say you know nothing about it, or have nothing to do with it. Hope it helps.

了解= know about 明白= understand

first:the followed by two words are different. eg:you can say 我了解情况。but,you can't say:我明白情况。 second:了解 usually followed by somthing concrete,while 明白 usually followed by something abstract.eg:我了解这个人。 我明白了一个道理。 人是具体的 而 道理是抽象的。 third:了解 often used in formal ways but 明白 often used in oral speaking

了解means you know something in general 明白means you know something more deaply

try this way...了解 = understood 明白 = get it am I right？