理解:
1.懂得事物的规律(understand the law or rule of one thing)
2.能站在某人的角度考虑到他所处的情景(stand on one's position and think about the thing)
了解:
1.掌握了某事件的进展程度(know the progress of a thing)
2.回顾某事件的发生过程(when an event happened, one person take action to know how to happen)
3.熟悉某人的性格(be familiar to somebody and know his or her personality and habits etc.)
I firstly answer to a question in English and I am on the stage of learning English also. If I didn't express clearly, we can exchange opinions.