...He writhed in their dual grasp, snarlingfuriously, his eyes red; his every giant musclestrained to get at the cowering Schwartz... 
Albert Payson Terhune 「Lad: A Dog」
...This dual arrangement disappears when the place chosen for the nest isnot large enough to contain the entire laying...
J. H. Fabre 「The Wonders of Instinct」
...This dual rule of descent brings us face to face with the question ofhow membership of kinship groups is determined...
Northcote W. Thomas 「Kinship Organisations and Group Marriage in Australia」
...These departures from decorative usage are, however,exceptional, and the dual symmetry is always observed where spacepermits...
Gaston Camille Charles Maspero 「Manual Of Egyptian Archaeology And Guide To The Study Of Antiquities In Egypt」
...Cassini discovered the dual nature of Saturn’s ring, having perceivedthat instead of one there are two concentric rings separated by a darkspace...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...It was only when they abandoned the dual conception—aninheritance from the dark ages of medicine—that they began tounderstand the disorders of man's mind and how to treat them...
Dr. D.M. Brooks 「The Necessity of Atheism」
...Now, when physiologists study the living brain of an ape, they have nogrounds for supposing that they are dealing with a dual structure...
Dr. D.M. Brooks 「The Necessity of Atheism」
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