I worked quickly, but in silence.

VOA: special.2009.05.16

None. When you walk through that door it's an act of free will, and I will not have anything other than complete silence.

走过那道门,是你的自由，我不会做其他事,除非保持安静。

麻省理工公开课 - 固态化学导论课程节选

It's because over the last two years since I last taught it, I've done a lot work in the area of silence.

因为上次课程结束后到现在的两年，我做了大量关于安静的研究。

哈佛公开课 - 幸福课课程节选

After 50 years of silence, I think the time has come to take stock and say, maybe we should mobilize all of the sciences to look for anything fishy, anything weird,any anomaly, both in our own little corner of the universe here on Earth and in the solar system, and far out across the galaxy."

VOA: standard.2010.04.16