The analytical results reveal that the sand grain of northeastern Sahara was formed under the river lacustrine deposition environment during warm humid climatic condition and had been reformed by wind action later.是什么意思_The analytical results reveal that the sand grain of northeastern Sahara was formed under the river lacustrine deposition environment during warm humid climatic condition and had been reformed by wind action later.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句