able to express thoughts and feelings easily and clearly, or showing this quality

an intelligent and highly articulate young woman 聪明过人且口齿伶俐的年轻女子

She gave a witty, entertaining, and articulate speech. 她的演讲机智幽默、引人入胜、鞭辟入里。

to express in words

I found myself unable to articulate my feelings. 我感到无法用语言来表达我的感情。

Many people are opposed to the new law, but have had no opportunity to articulate their opposition. 很多人不赞成这项新法律，但是却没有机会去表达他们的反对意见。

to pronounce

When children first learn to talk, there are some sounds that they find difficult to articulate. 小孩子刚学说话时，有一些音他们很难发出来。

to connect two bones by forming a joint