At the southwest corner of the present-day Scablands, the flood water pooled, forming another large lake before it drained into the Columbia Gorge and then into the sea.是什么意思_At the southwest corner of the present-day Scablands, the flood water pooled, forming another large lake before it drained into the Columbia Gorge and then into the sea.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句