History: The history of Zigong is tightly connected with salt industry and the city is well-known for its 1,900 years of salt manufacturing history.是什么意思_History: The history of Zigong is tightly connected with salt industry and the city is well-known for its 1,900 years of salt manufacturing history.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句