The feudal serf system that mingled politics with religion in old Tibet seriously hindered the development of the social productive forces. Therefore,for a long time its economy was in a primitive and backward state.是什么意思_The feudal serf system that mingled politics with religion in old Tibet seriously hindered the development of the social productive forces. Therefore,for a long time its economy was in a primitive and backward state.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句