印象中，河流发生过很多次洪水的翻译：Impression that the River happened many times flooding 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Impression that the river many flood

Impression that the River happened many times flooding

In the impression, the rivers have had very many inferior floods

In Impression, the river floods have occurred many times

Impression that the River happened many times flooding