Only dicotyledonous flowering woody plants and most gymnosperms have true twigs;monocotyledons and tree ferns do not.是什么意思_Only dicotyledonous flowering woody plants and most gymnosperms have true twigs;monocotyledons and tree ferns do not.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句