Even at Meridiani, basaltic sands lie atop the lake sediments, indicating that the site has been parched for two billion to three billion years.是什么意思_Even at Meridiani, basaltic sands lie atop the lake sediments, indicating that the site has been parched for two billion to three billion years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句