Jeff Pettis: These bees have multiple viruses. They have multiple bacterial infections.
杰夫·佩蒂斯：这些蜜蜂受各种病毒的侵扰，被各种细菌感染。
Jeff Pettis: these bees have multiple viruses. They have multiple bacterial infections. And it's the cumulative effect of all these that's killing them.
杰夫·佩蒂斯：这些蜜蜂受各种病毒的侵扰，被各种细菌感染。这些因素的综合作用导致它们的死亡。
USDA's top bee scientist, Jeff Pettis, who is coordinating the detective work on this die-off, has more suspected causes than time, people and money to look into them.
美国农业部的首席蜜蜂科学家Jeff Pettis负责协调调查这次蜜蜂死亡，他有更多的人力和财力来调查，他认为除了时间外还有很多可怀疑的原因。
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