Why do the aged tend to be taciturn?

很多老年为什么沉默？

The scholar was reticent, aloof, and meditative.

这位少语、离群索居而且总在沉思。

The ant is the most industrious animal; however, it is the most taciturn one.

没有任何动物比蚂蚁更勤奋，然而它却最沉默。

He breaks out of his normal reticence and tells me the whole story.

他打破了平时一沈默习惯,把事情原原本本都告诉了我。

Her uncle was a silent, uncommunicative Yankee farmer.

她伯父是一个沉默美国式农民。

He is a man of few words.

他是个沉默。

Scholars are a quiet breed.

们大都沉默。

Gradually he became silent.

渐渐地他变得沉默了。