The Great Depression was a defining moment in the history of the 20th century, and understanding its causes and consequences remains a critical task for economists.
大萧条是20世纪历史上的一个决定性时刻，理解其原因和后果仍然是经济学家的一项重要任务。
我们必须在气候行动的紧迫需求与能源安全和经济增长的同等紧迫需求之间取得平衡。
Happiness is not about having more, but caring less.
