求翻译：摘要：1841年3月，恩格斯听了贝多芬命运交响曲的演出。他在写给妹妹的信中赞美这部作品说："如果你不知道这个奇妙的东西，那么你一生就算什么也没有听见。"他说，他在第一乐章里听到了"那种完全的绝望的悲哀，那种忧伤的痛苦"；在第二乐章里听到了"那种爱情的温柔的忧思"；而第三、第四乐章里"用小号表达出来的强劲有力、年轻的、自由的欢乐"，又是那么鼓舞人心。恩格斯用短短的几句话，揭示了贝多芬命运交响曲的精髓。是什么意思？

Abstract: In March 1841, Engels listening to Beethoven's Symphony of Destiny's performance. His sister wrote a letter in praise of this work, said: "If you do not know the wonderful things that life, even if you did not hear anything." He said he heard the first movement, "the kind of complete despa

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Abstract

Summary: in March 1841, Engels fate listened to Beethoven's Symphony performances. He wrote in a letter praising the works of sister said: "If you don't know the wonderful things, then even did not hear anything in your life. "He said, he heard in the first movement" that full of desperate sadness,