...In summer they took the shortest road to water,regardless of intervening obstructions, and theythought nothing of flinging themselves over a perpendicularbank, wagon and all... 
W. E. Webb 「Buffalo Land」
...These obstructions are shown by loss ofpower in the muscles supplied by the obstructed artery and by excitation of theheart and by respiration after exercise...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Hence the boat-like shape, thesmooth hairless body without projections, which easily squeezes its waypast obstructions...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...It was effective for police work, with hand torches forseeing around opaque obstructions...
Raymond King Cummings 「Wandl the Invader」
...Mind has itsinertia as well as matter; and its progress to truth can only be insuredby the gradual and patient removal of the obstructions which surroundit...
David Brewster 「The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler」
...might lodge against them, and form dangerous obstructions in the way of craft which might be hereafter used on the river...
David Collins 「An Account of the English Colony in New South Wales, Vol. 1」
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