White House spokesman Jay Carney says the FBI is conducting further tests to confirm the initial readings that the letters contained the poison ricin.
白宫发言人杰伊·卡尼表示，联邦调查局正在进行进一步的检测，初步检测结果表明信件中含有蓖麻毒素。
Several hours after releasing the initial results, the plant operator said that those readings had been in error, and that retesting had shown negligible amounts of the isotope.
这一数据发布数小时后，核电站操作员对这些数据进行了澄清，重新检测后，只有微不足道的一些同位素被发现。
The initial reports were the result of bad weather and faulty sonar and radar readings.
雷达声纳系统出错，加上天气恶劣，直接导致谬误报告的产生。
The initial reports were the result of bad weather and faulty sonar and radar readings.
雷达声纳系统出错，加上天气恶劣，直接导致谬误报告的产生。
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