例文・使い方で印象づける「sharpen」の覚え方
スポンサーリンク...Señora Angustias with her two children, Encarnación and little Juan, hadto sharpen her wits and develop numerous talents in order to keep thefamily together... 
Vicente Blasco Ibáñez Frances Douglas 「The Blood of the Arena」
... “In short, it appears that this young man is a fire-eater,” said Louis, in order to sharpen the sentiment which he mistook for envy...
Alexandre Dumas, Pere 「Ten Years Later」
... This second species was encouraged by the laws of Lycurgus, in order to sharpen the wits of the young...
P. J. Proudhon 「What is Property?」
...You cut a stake, sharpen it at one end, cut it about 15 inches long, about 1 inch in diameter; leave a prong about three inches long and about three inches from top to stake down trap...
A. R. (Arthur Robert) Harding 「Fox Trapping」
...I sharpen the other end for the purpose of driving it into the ground...
A. R. (Arthur Robert) Harding 「Wolf and Coyote Trapping」
...In detecting prey the tongue acts to sharpen the sense of "smell" by conveying particles to Jacobson's organs in the roof of the mouth...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...It is better to give him an occasional feed of the raw grain, fora change, and to sharpen his appetite...
Richard L. Allen 「Domestic Animals」
...Menplay the cynic: modest merit goes to the wall, they say; whoever wouldsucceed, let him put on a brazen face and sharpen his elbows...
Bradford Torrey 「The Foot-path Way」
...When the veins of the birch overflow in the spring,Then I sharpen my bill and make the woods ring,Till forth gushes—rewarding my tap, tap, tap!The food of us Suckers—the rich, juicy sap...
Various 「Birds Illustrated by Colour Photography, Vol II. No. 4, October, 1897」
...There was a peg to sharpen, ora broken mesh to mend...
Anonymous 「The Confessions of a Poacher」
...Cut a forked stick, one prong one inch long, the other 6 or 8 inches long; sharpen it, run your bait on this, put the stick in the back of the hole which fastens your bait...
A. R. (Arthur Robert) Harding 「Mink Trapping」
...As soon as they reached the place Līgī said,“You go up and cut the bamboo and sharpen the ends...
Fay-Cooper Cole 「Traditions of the Tinguian: A Study in Philippine Folk-Lore」
...” “Did you sharpen the ends? If you pointed them, put them in one place...
Fay-Cooper Cole 「Traditions of the Tinguian: A Study in Philippine Folk-Lore」
...When everything necessary was ordered, “all hands” were put on to sharpen saws and tools, and the homestead shrieked and groaned all day with harsh, discordant raspings...
Jeanie “Mrs. Aeneas” Gunn 「We of the Never-Never」
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