For this purpose an original record by suitable mechanism is made to take the place of the speaker or singer, and so multiplies and reproduces the original record. Edward W. Byrn.十九世纪发明进展.
Such a culture so multiplies the same microbe, to the exclusion of others, as to permit it to be easily identified and studied. Edward W. Byrn.十九世纪发明进展.
Every species of animals naturally multiplies in proportion to the means of their subsistence, and no species can ever multiply be yond it. 亚当·斯密.国富论.