There are more than 20 developed sandstone oilfields of low-amplitude anticline in South China Sea, with their recoverable oil reserves about 80% of the total developed reserves in South China Sea.是什么意思_There are more than 20 developed sandstone oilfields of low-amplitude anticline in South China Sea, with their recoverable oil reserves about 80% of the total developed reserves in South China Sea.在线翻译_英语_读音_用法_例句