The Donghe Sandstone was broadly deposited in the early stage of the marine transgression,but it is not an isochronous stratigraphic unit.是什么意思_The Donghe Sandstone was broadly deposited in the early stage of the marine transgression,but it is not an isochronous stratigraphic unit.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句