Moreover, it was in 2004 that America began importing bees from australia-just when American beekeepers are thought to have seen the first suspected cases of colony collapse disorder.

此外，美国在2004年才开始引进澳大利亚蜜蜂——也是在这一年，美国的蜂农们第一次看到被确信是蜂群衰竭失调的情况。

youdao

Colony collapse disorder became widespread in America in the winter of 2006-07, when about a quarter of the nation's beekeepers were affected, each losing between 30% and 90% of their winged workers.

蜂群衰竭失调自2006到07年冬天以来就在美国广泛传播，全国四分之一的蜂农受到影响。他们的蜜蜂有30%到90%的损失。

youdao

Many commercial beekeepers have been devastated by a mysterious syndrome known as colony collapse disorder (CCD), in which many worker bees vanish.

很多商业性的蜜蜂看护者都被一种神秘的称为，蜂巢坍陷障碍CCD的症状所困扰，很多工蜂因此而死去。

youdao

Colony collapse disorder first struck honey bees in the United States in late two thousand six.

VOA: special.2009.09.15