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In Haiti, a powerful aftershock sent Haitians into the streets, cracking roads and adding to the nation's trauma. The magnitude-5.9 jolt matched the strongest of the aftershocks that came after the huge quake that devastated the capital Port-au-Princ
美联社新闻一分钟2010(一月)
Atrial fibrillation is a cardiac arrhythmia that often produces very disruptive palpitations, fatigue, and even shortness of breath. Worse, atrial fibrillation can substantially increase your risk of stroke. If you have atrial fibrillation there is l
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1. The start of summer is heating up the eastern seaboard. The National Weather Service is forecasting temperatures into the high 90s from Boston down to Washington. Dozens of cities are setting up public cooling centers for those without air conditi
美联社新闻一分钟2012(七月)
Sustained Irregular Heartbeat Raises Mortality Risk for Middle Aged Women Many doctors see atrial fibrillation (AF), an abnormal heart rhythm, in their elderly patients. But a new study indicates that a surprising number of middle aged women, who are
VOA标准英语2011年(六月)
This is the VOA Special English Health Report. A condition called atrial fibrillation produces an abnormal heartbeat. People feel their heart race and they lose their breath. It may last a few seconds, but it can get worse and worse with age, leading
2010年慢速英语(二)月
APIPA, Automatic Private IP Addressing / 自动专用 IP 寻址 AppleShare AppleTalk AppleTalk Filing Protocol / AppleTalk 编档协议 AppleTalk network integration (formerly Services for Macintosh) /
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