...After laboring there three or four years, in building stone dikes and dams for the Dutch farmers, they were well content if at the end of that time they could return with as many cows... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...We findhim a creature of intelligence far above that of hisnear kinsmen, and endowed with some extraordinaryinstincts that guide him in making dams, houses,etc...
Ernest Thompson Seton 「Wild Animals at Home」
...But when I examinedthe ground again in 1912, the dams were broken,the ponds all dry...
Ernest Thompson Seton 「Wild Animals at Home」
...Last September I found a fine lots of dams anddammers on the southeast side of Yellowstone Lakewhere you may go on a camera hunt with certaintyof getting Beaver pictures...
Ernest Thompson Seton 「Wild Animals at Home」
...The dams are built of the same material as the houses...
Elmer Harry Kreps 「Science of Trapping」
...One oftheir most remarkable habits is that of building dams on the stream, orat the outlet of the pond or lake on which they are located...
A. R. Harding 「Fur Farming」
...He gets from eight hundred to one thousandhalf-blooded sheep, worth double their dams, and ready to be made thebasis of another and higher stride in improvement...
Robert Jennings 「Sheep, Swine, and Poultry」
...In the forties the check dams fellinto disrepair...
Henry S. Fitch 「The Forest Habitat of the University of Kansas Natural History Reservation」
...He then perceived four old otters,probably dams, and about twenty young ones...
R. Lee 「Anecdotes of the Habits and Instinct of Animals」
...One summer, in canoeing a wild,unknown stream, I met fourteen dams within a spaceof five miles...
William J. Long 「Ways of Wood Folk」
...In the alder or birch swamps, wherehe usually lives, he oft-times builds from six to eight little dams fromknoll to knoll, and in this way makes a pond sufficiently large for hispurposes...
Royal Dixon 「The Human Side of Animals」
...In such a case dams are not needed, and regulationbeaver houses are rarely constructed...
Royal Dixon 「The Human Side of Animals」
...They are formed of numbers of poles,twigs, and small branches of trees, woven together and plastered withmud, in the same way that the dams are made...
Royal Dixon 「The Human Side of Animals」
...There are four low-head dams between the upper and middleMarais des Cygnes stations...
James Everett Deacon 「Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas」
...Thematerials used for the construction of their dams are thetrunks and branches of small birch, mulberry, willow, andpoplar trees...
Various 「Natural History in Anecdote」
...There were no artifacts,dwellings, roads, dams, bridges—primitive or otherwise...
Melvin Sturgis 「The Unprotected Species」
ランダム例文：
differ fruitless aurally
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