An influx of people or things into a place is their arrival there in large numbers.
例句
...problems caused by the influx of refugees.大批难民涌入产生的问题...the influx of American popcorn into the British market.美国爆米花大量涌入英国市场
英汉词典释义
n.
大量涌入; (人、资金或事物的)涌入, 流入
an influx of imports进口货大量输入The country sealed its borders to prevent the influx of illegal immigrants.为了防止非法移民大量湧入,该国封闭了边境。The country simply cannot absorb this influx of refugees.这个国家实在不能接纳这么多涌入的难民。