in memory of   (TTS發音)

keeping alive the memory（為）紀念

    They are going to erect a monument in memory of the men who laid down their lives in defense of their country. 他們將樹碑紀念為保衛祖國而獻身的人們。

    A monument has been erected in memory of their beloved teacher. 為了紀念他們敬愛的老師，他們已經樹起了一塊紀念碑。