Definition: If you know a subject, you are familiar with it and understand it. Level: B1
你了解电脑吗？
Do you ___know about computers?
她对自己的学科了如指掌。
She ___knows her subject inside out.
如果你想了解更多关于秘鲁历史的知识，我推荐参观这座城市。
If you want to ___know more about Peruvian history, I recommend visiting the city.
