It was really kind of you to help me.
你帮我的忙，我太感激了。
It was most kind of you to meet me.
你来接我真是太好了。
I like him, kind of.
我有点儿喜欢他。
My sister is a knowledgeable professor.
我姐姐是个知识渊博的.人。
She's a knowledgeable woman.
她是个知识渊博的女人。
provided by jukuu
Others hold the view that a wealthy person is one who is knowledgeable and wise.