“了解”用英文“learn about”还是“know about”

“了解”用英文“learn about”还是“know about” know about . learn about. 造句 learn about与know about区别 know 和 know about;learn 和learn about的区别 know much about还是know many about know 、know about和learn about 的区别 know about 和 learn about 都表“了解”时如何区分 并举几个有代表性的例子 是 learn more about还是learn about more know about 与 learn的区别 know 和 learn about的区别 know about 与 learn about的用法区别 网络可以帮我们更好的了解世界.英文（learn.about)