防空警报声响起，汽车、火车和舰船笛声哀鸣，人们肃立着为上周地震中的遇难者默哀3分钟。
Flags were flyingat half-mast across the country and all public entertainment has been suspended as the three-day mourning period started. The Olympic torch relay is also suspended during the period.
在为期三天的全国哀悼日期间，全国各地降半旗致哀，停止各类公共娱乐活动。此间暂停奥运火炬传递。
上述报道中，stand in silence就是“起立默哀”的意思，at half-mast是“降半旗”的意思，用在句子里我们可以说：Flags are at half-mast. /Flags are flying at half-mast.
哀悼日期间，除了suspend public entertainment（停止公共娱乐活动），suspend the Olympic torch relay（暂停奥运火炬传递）以外，外交部和驻外使领馆还设了“吊唁簿”（condolence books），“股票和期货交易”（stocks and futures exchanges）19日下午14:28时“临时停市3分钟”（temporarily suspend trading for 3 minutes）。
very good! 
很实用 
Just one last dance
Teenage Life
珍珠港主题曲there yo
西城男孩Try again