At a single motion of his hand, the room fell silent.
他手一挥，屋子里便安静了下来。
He gave me the silent treatment.
他对我不予理睬。
As the curtain rose, the audience fell silent.
幕启时，观众安静下来。
The report is strangely silent on this issue.
很奇怪，报告对这个问题避而不谈。
They huddled together in silent groups.
他们一群群地围在一起，默不作声。