역사상 꿀벌의 건강 상태를 살펴보면 950년으로 거슬러 올라가 아일랜드에서 꿀벌 사망률이 높았다는 걸 발견하게 됩니다
And looking back historically at the timeline of honeybee health, we can go back to the year 950 and see that there was also a great mortality of bees in Ireland.