Ten years have passed on Tines World, where Ravna Bergnsdot and a number of human Children ended up after a disaster that nearly obliterated humankind throughout the galaxy. Ravna and the pack animals for which the planet is named have survived a war, and Ravna has saved more than one hundred Children who were in cold-sleep aboard the vessel that brought them. While there is pe...(展开全部)

Ten years have passed on Tines World, where Ravna Bergnsdot and a number of human children ended up after a disaster that nearly obliterated humankind throughout the galaxy. Ravna and the pack animals for which the planet is named have survived a war, and Ravna has saved more than one hundred children who were in cold-sleep aboard the vessel that brought them. While there is pe...(展开全部)

Ten years have passed on Tines World, where Ravna Bergnsdot and a number of human Children ended up after a disaster that nearly obliterated humankind throughout the galaxy. Ravna and the pack animals for which the planet is named have survived a war, and Ravna has saved more than one hundred Children who were in cold-sleep aboard the vessel that brought them. While there is pe...(展开全部)

Ten years have passed on Tines World, where Ravna Bergnsdot and a number of human children ended up after a disaster that nearly obliterated humankind throughout the galaxy. Ravna and the pack animals for which the planet is named have survived a war, and Ravna has saved more than one hundred children who were in cold-sleep aboard the vessel that brought them. While there is pe...(展开全部)

欧文·费雪（Irving Fisher, 1867—1947），美国经济学家、数学家，货币学派的最主要代表，经济计量学的先驱者之一，以货币数量论（也称为“费雪方程式”）闻名于世。

In 1912, a well-known doctor and writer named Janusz Korczak designed an extraordinary orphanage for Jewish children in Warsaw, Poland. Believing that children were capable of governing themselves, he encouraged the orphans to elect a parliament, run a court, and put out their own weekly newspaper. Even when Korczak was forced to move the orphanage into the Warsaw Ghetto after ...(展开全部)

The children of the forest live deep in the roots of an old pine tree. They collect wild mushrooms and blueberries and shelter under toadstools when it rains. They play with the squirrels and frogs, and when autumn comes, they collect and prepare food to see them through the long winter, until the warm spring breeze starts to blow.

The planet Lusitania is home to three sentient species: the Pequeninos; a large colony of humans; and the Hive Queen, brought there by Ender. But once against the human race has grown fearful; the Starways Congress has gathered a fleet to destroy Lusitania.Jane, the evolved computer intelligence, can save the three sentient races of Lusitania. She has learned how to move ships ...(展开全部)

"Unreservedly recommended, sums up in simple language Adler's experience of children." --eacher's World