父与子——一年之后

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父亲也是， then held the nail in his mouth and bit it with his teeth. then he used the hammer as a ruler to make a mark on the tree trunk along the direction of his son s head，再用锤子当标尺沿着儿子头顶的方向在树干上做了个标记，父与子——一年之后，钉子怎么高了？ but that the small tree grows faster tha

温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。