Sent_en: 2zh Last year there were similar false positive reports of ricin in London, which were further publicized by Vice President Cheney and Secretary of State Colin L. Powell.
Sent_yy: 去年，伦敦也有类似的蓖麻毒素假阳性报告，副总统切尼和国务卿科林·鲍威尔进一步公布了这些报告。