原先是跟日本的建議一樣,是撤出20公裏,如果有安全的房屋,可呆在30 公裏以外。美方說,美方是按照在美國的標準考慮的。
Washington (CNN) -- The United States dramatically expanded its evacuation warnings near the troubled Japanese nuclear reactors Wednesday, telling Americans to get at least 50 miles away.
The earlier recommendation from both the U.S. and Japanese governments was to stay 12 miles away or to take shelter indoors if evacuation was not possible within an 18-mile radius.
http://edition.cnn.com/2011/POLITICS/03/16/us.japan.evacuation/