take the liberty of doing [sth]v exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
(do [sth] without permission)
冒昧 mào mèi
擅自 shàn zì
May I take the liberty of calling you Marta? You weren't here when the waiter came so I took the liberty of ordering for you.