When the large cannons in the forts on our coast are discharged during target practice, there are usually a lot of windows broken in the nearby houses. 佚名.神奇的知识之书.
Cannons are subject to great stress in firing, this being of two kinds. 佚名.神奇的知识之书.
Cannons were fired and much tallow consumed in illumination. 哈里特·威尔逊.哈里特·威尔逊回忆录.
To return to cannons:--In 1812 Colonel Bomford, an American officer, invented what is called the Columbiad, a kind of cannon best adapted for sea-coast purposes. 威廉·亨利·杜利特.世纪发明.