slight variations from empty frames in the brood nest, frames of bare foundation in the brood nest or drawn combs in the brood nest, or moving brood combs
天地之鉴也;万物之镜也。”“以虚静心通于万物”表达了空虚即是一种身心放空的圣人境界。 厭煩 空巢综合征(英语:Emptynest syndrome) 虚无主义 生理学 灵魂 Downs, A. The Half-Empty Heart: A supportive guide to breaking free from