At the beginning of ninth century, under their king Egbert the West Saxons of defeated the Mercies. In 829, Egbert became an overlord of all the England.是什么意思_At the beginning of ninth century, under their king Egbert the West Saxons of defeated the Mercies. In 829, Egbert became an overlord of all the England.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句