And that's the difference between problems that are additive, like CO2, 这个就是可添加性问题，像二氧化碳问题， which we go slowly up and then we tip, and problems that are depletive, in which we lose what we have, which
Elie Wiesel，曾在奥斯维辛集中营受尽折磨，后成为大学人类学教授，曾获诺贝尔和平奖。21世纪之际白宫邀请发表演讲：拒绝漠然，承担责任。 The Perils of Indifference By Elie Wiesel Mr. President, Mrs. Clinton, members of Congress, Ambassador Holbrooke, Excellencies,
REMARKS BY THE PRESIDENT ON MEMORIAL DAY Memorial Amphitheater Arlington National Cemetery THE PRESIDENT: Thank you, Admiral Mullen, for that generous introduction and for your sterling service to our
Lisa Bu在Ted英语演讲：How books can open your mind 读书能打开心灵之窗(中英双语) So I was trained to become a gymnast for two years in Hunan, China in the 1970s. When I was in the first grade, the government wanted to tr
