The poles of the electromagnet in the local circuit are hollowed out and filled up with carbon disks or powdered plumbago. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Roughly pyramidal in shape and hollowed out, I perceive. 阿瑟·柯南·道尔.福尔摩斯归来记.
Canoes are made of logs hollowed out, or of birch bark stretched over a light frame, skilfully fastened with deers’ sinews and rendered water-tight by pitch. 佚名.神奇的知识之书.
Conceive a dell, deep-hollowed in forest secresy; it lies in dimness and mist: its turf is dank, its herbage pale and humid. 夏洛蒂·勃朗特.维莱特.