Sent_en: 2zh According to Dennis vanEngelsdorp, a bee specialist with the Pennsylvania State Department of Agriculture, "We are pretty sure, but not certain, that it is a contagious disease."
Sent_yy: 宾夕法尼亚州农业部的蜜蜂专家丹尼斯·范安吉斯多说：“我们非常相信，但不能肯定，这是否是一种传染性疾病。”