埃里克·方纳，美国哥伦比亚大学德威特·克林顿历史学荣休教授，当代美国最有影响力的历史学家之一，曾任美国历史学家组织主席（1993）、美国历史学会主席（2000）和美国历史学家协会主席（2006）。方纳在美国内战史、重建史、黑人史和政治文化史等领域中著述甚丰，其著作《美国自由的故事》《给我自由》《烈火中的考验》《自由之路：“地下铁路”秘史》已被译为中文。 杨钊，北京外国语大学历史学院副教授，主要研究方向包括美国19世纪政治史、中国人留学美国史等，著有《纽约州政党政治与美国第二政党体制的起源（1812-1824）》，主持国家社科基金青年项目一项，在《世界历史》《史学理论研究》《史学史研究》《史学月刊》《读书》等刊物发表论文多篇。

Since its publication in 1976, Tom Paine and Revolutionary America has been recognized as a classic study of the career of the foremost political pamphleteer of the Age of Revolution, and a model of how to integrate the political, intellectual, and social history of the struggle for American independence. Foner skillfully brings together an account of Paine's remarkable career ...(展开全部)

A penguin has wings for a reason . . . doesnÕt he? Having a best friend with his own airplane is one thing, but actually experiencing what it feels like to fly by himself? Here is one penguin who believes this is precisely what he needs to feel complete. Only . . . if flying by himself is so wonderful, then why does he feel so empty? Because some experiences are better shared....(展开全部)

In this much-anticipated sequel to the internationally best-selling picture book Lost and Found, we re-visit the boy and the penguin after their trip to the South Pole! All seems well between the two friends, who enjoy spending time together, playing their favourite game! That is, until the penguin starts getting ideas above his station, wanting to fly, while ignoring the boy's...(展开全部)

In this much-anticipated sequel to the internationally best-selling picture book Lost and Found, we re-visit the boy and the penguin after their trip to the South Pole...The boy and the penguin still enjoy spending all their time together...That is, until the penguin starts to dream of flying, ignoring the boys advice that it is impossible. Running away, the penguin visits plac...(展开全部)

In this much-anticipated sequel to the internationally best-selling picture book Lost and Found, we revisit the boy and the penguin after their trip to the South Pole...The boy and the penguin still enjoy spending all their time together...That is, until the penguin starts to dream of flying, ignoring the boys advice that it is impossible. Running away, the penguin visits place...(展开全部)

In this much-anticipated sequel to the internationally best-selling picture book Lost and Found, we revisit the boy and the penguin after their trip to the South Pole...The boy and the penguin still enjoy spending all their time together...That is, until the penguin starts to dream of flying, ignoring the boys advice that it is impossible. Running away, the penguin visits place...(展开全部)

Lorin Hochstein任职于SendGrid实验室，是一名负责开发与部署新产品的高级软件工程师。他曾在Nimbis Services任职云服务首席架构师，还曾经是加州大学信息科学院的计算机科学家。Lorin拥有马里兰大学计算机科学博士学位。 译者介绍：陈尔冬，前新浪网技术总监；现华为高级技术专家，从事公有云相关能力建设。

How does Vagrant boosts the productivity of companies such as Mozilla, RackSpace, LivingSocial, and others? This comprehensive guide shows you how to create and distribute virtualized development environments with this powerful open source tool. While Virtual machines (VMs) are portable and easy to run, due to their isolation from outside interference, many developers and syste...(展开全部)

How does Vagrant boosts the productivity of companies such as Mozilla, RackSpace, LivingSocial, and others? This comprehensive guide shows you how to create and distribute virtualized development environments with this powerful open source tool. While Virtual machines (VMs) are portable and easy to run, due to their isolation from outside interference, many developers and syste...(展开全部)