A twining, eastern Mexican vine (Exogonium purga) having tuberous roots that are dried, powdered, and used medicinally as a cathartic.是什么意思_A twining, eastern Mexican vine (Exogonium purga) having tuberous roots that are dried, powdered, and used medicinally as a cathartic.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句