verb
[vt. 及物动词]
（使）淹没；泛滥；大量涌来，大量涌去；（感觉或回忆）涌上心头；（光线）倾泻，照亮；（使）溢流；（产后等）子宫出血过多，月经过多
If something such as a river or a burst pipe floods an area that is usually dry or if the area floods, it becomes covered with water.
为水所淹; 淹没
noun
[具体名词]
洪水，水灾；大批，大量（的人或事物）；<文>（海洋、江河等）大水体
If you say that a flood of people or things arrive somewhere, you are emphasizing that a very large number of them arrive there.
一大批