The swimming-bladders or sounds, besides being highly nutritious, supply, if rightly prepared, isinglass equal to the best of that which is brought from Russia. 佚名.神奇的知识之书.
I do not know how far corks or bladders may be useful in learning to swim, having never seen much trial of them. 本杰明·富兰克林.富兰克林自传.
The bladders of animals suggested it, and their skins were substituted for the bladders. 威廉·亨利·杜利特.世纪发明.