voluble

他滔滔不绝地讲了两个小时，几乎没给其他人插话的机会。

He talked in a ___voluble manner for two hours, leaving almost no chance for others to speak.

那位健谈的导游用一连串没完没了的历史轶事逗乐了整个团队。

The ___voluble tour guide regaled the group with an endless stream of historical anecdotes.

她平时在晚餐时总是滔滔不绝，但当话题转到她的晋升时却一反常态地沉默了。

Usually so ___voluble at dinner, she fell uncharacteristically silent when the topic of her promotion came up.