It is a man-made island heaped up by silt when the authorities undertook to dredge up the Huangpu River in1926.是什么意思_It is a man-made island heaped up by silt when the authorities undertook to dredge up the Huangpu River in1926.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句