在北美西部的广大地区，日益温暖的冬季正导致树皮甲虫的大规模爆发。
Across vast areas of western North America, increasingly mild winters are causing massive outbreaks of bark beetle.
这种爆发性的新方式极大地缩短了基利的比赛时间。
The explosive new style helped cut Killy's racing time dramatically.
美国卫生与公众服务部长莱维特说，美国正在帮助中国努力防止星期一发生大地震后爆发传染病疫情。
The U.S. Health and Human Services Secretary Mike Leavitt says the United States is helping China work to prevent the outbreak of infectious diseases following this week's massive earthquake.
应用推荐