inundate
verb [ T ] uk/ˈɪn.ʌn.deɪt/ us/ˈɪn.ʌn.deɪt/
(TOO MUCH)
使应接不暇
to give someone so much work or so many things that they cannot deal with it all
We have been inundated with requests for help. 求助申请多得让我们应接不暇。
(FLOOD)
formal（洪水）淹没
to flood an area with water
If the dam breaks it will inundate large parts of the town. 如果水坝决口，这个城镇的大部分地区都将被淹没。