In China in 2018 over 200 million rural migrants worked away from their hometowns, fuelling the country's rapid economic boom. In the 2010s over sixty-one million rural children had at least one parent who had migrated without them, while nearly half had been left behind by both parents. Rachel Murphy draws on her longitudinal fieldwork in two landlocked provinces to explore th...(展开全部)

Gateway opened on all the wealth of the Universe...and on reaches of unimaginable horror. When prospector Bob Broadhead went out to Gateway on the Heechee spacecraft, he decided he would know which was the right mission to make him his fortune. Three missions later, now famous and permanently rich, Robinette Broadhead has to face what happened to him and what he is...in a journ...(展开全部)

Wealth ...or death. Those were the choices Gateway offered. Humans had discovered this artificial spaceport, full of working interstellar ships left behind by the mysterious, vanished Heechee. Their destinations are preprogrammed. They are easy to operate, but impossible to control. Some came back with discoveries which made their intrepid pilots rich; others returned with ...(展开全部)

弗雷德里克·波尔 （Frederik Pohl ，1919-2013） 美国著名科幻作家、编辑，美国科幻作家协会前主席。波尔在其七十多年的写作生涯中，发表过三十多部长篇小说、数百篇短篇小说，其长篇作品《火星超人》获得了星云奖，《通往宇宙之门》更是包揽了雨果奖、星云奖、轨迹奖和约翰·坎贝尔纪念奖等多项大奖。他曾七次荣获雨果奖，两次荣获星云奖。布赖恩·奥尔迪斯曾在《西方科幻小说史》中，将波尔与艾萨克·阿西莫夫、罗伯特·海因莱因、阿瑟·克拉克、弗兰克·赫伯特等人并称为“科幻小说七巨擘”。

Gateway opened on all the wealth of the Universe...and on reaches of unimaginable horror. When prospector Bob Broadhead went out to Gateway on the Heechee spacecraft, he decided he would know which was the right mission to make him his fortune. Three missions later, now famous and permanently rich, Robinette Broadhead has to face what happened to him and what he is...in a journ...(展开全部)

https://profilebooks.com/great-state-hb.html China is one of the oldest states in the world. It achieved its approximate current borders with the Ascendancy of the Yuan dynasty in the 13th century, and despite the passing of one Imperial dynasty to the next, it has maintained them for the eight centuries since. Even the European colonial powers at the height of their power coul...(展开全部)