they plan to set up a mounment in memory of the dead men
问题描述：
they plan to set up a mounment in memory of the dead men
为什么用in
答
they plan to set up a mounment in memory of the dead men
翻译
他们打算为过世的人建议做纪念碑来纪念他
固定词组【in memory of】为了纪念