In 1991,the total output value of agriculture reached 2.046 billion yuan in Tibet,4.4 times higher than in 1952. Grain output came to 580 million kg and the average per-mu yield was 224 kg,showing rises of 3.7 times and 2.8 times respectively over 1952.是什么意思_In 1991,the total output value of agriculture reached 2.046 billion yuan in Tibet,4.4 times higher than in 1952. Grain output came to 580 million kg and the average per-mu yield was 224 kg,showing rises of 3.7 times and 2.8 times respectively over 1952.在线翻译_英语_读音_用法_例句