A wild boar was sharpening his tusks against a tree one day when a fox came by. "What are you doing that for?" asked the fox . "There are no hunters around. Everything looks very peaceful to me ." "Quite true, "said the boar, "but when the hunter does come with his dogs I shall be too busy running away to have time for this . So let me sharpen my tusks while I can." Be prepared .
boar 公猪
sharpen 使…尖锐
tusk 长牙
against 对着