You silly boy; why did you tramp about so long in the cold?...你这个傻孩子，为什么大冷天走这么大老远的路？Tramp, tramp , tramp , columns of militiamen marched by in perfect step.一队队民兵欻欻地走过去,非常整齐.a homeless tramp无家的流浪者She wants to go for a tra...
彼得深邃的目光长久地注视着他。Peter gave him a long deep look.房顶未必能如侯爵设想的那么长久地遮挡住天空.That might not be so long as the Marquis supposed.宽大的住宅并不能长久地留在游人的记忆中.For it is not the large houses that live in the memory of the visitor....
A little porcupine made a house by the side of the river.小刺猬在小河边上造了一幢小房子.It is the Kookaburra ( Porcupine ) and Skunk Kingdoms that greet you today.今天是笑翠鸟 ( 豪猪 ) 和臭鼬王国向你们问候.One of the sharp hollow spines of a porcupine o...
三角形的三个高共点.The 3 altitudes of a triangle are concurrent.建构一动态绘图:展示星状线共点的三切线.Construct an animation of three concurrent tangents of the astroid.圆上五点,其任四条辛姆森线会共点,可依次找出五点,这五点会共圆.Discover a theorem about the Simson line and f...