When he came back and sat down beside her, his dark eyes alertly searching her face, the pall of death receded before the vitality he radiated and the room seemed pleasant and homelike again, the lamps rosy and warm.

他回来坐她身旁，一双黑眼睛机敏地看着她的脸，仔细端详。他发出的活力驱散了她脸上的哀愁，使她觉得书房似得可爱而舒适了，灯光也显得柔和而温暖。

I'm sure you know someone who's quite witty, who is quick-witted.

我相信你肯会认识妙趣横生的人，非常地聪明机敏。

In a riposte to those who had difficulty in seeing where exactly God was at work in a troubled world he said, “The Kingdom of God is among you”.

一些人很难糟糕的世界见到上帝的真面目，对此些人，基督机敏地回答道，“上帝的王国就你们之间。”

The mother bear is on the trail of a herd of deer, but the deer are also wise to predators.

熊妈妈追踪一群鹿，但鹿也会很机敏地对付掠食者。

Other eyes besides mine watched these manifestations of character—watched them closely, keenly, shrewdly.

除了我，还有其他目光注视着些性格的表现——密切、锐利、机敏地注视着。

(Laughter) But, being previously faced with so many ultimatums, one's forced to be astute in adapting to new situations.

（笑声） 但是， 之前面对么多的最后通牒，一人被迫要机敏地适应新情况。