Now this has been a huge problem for many years, basically since the late 1980s, when the varroa mite came and brought many different viruses, bacteria and fungal diseases with it.
这是养蜂人多年以来面临的困扰 1980年代末期，蜜蜂蟹蟎入侵 并随之携带许多不同的细菌、病毒 以及真菌传染疾病。