1
the floodplain of + [river]
用 of 连接河流名称，表示某条河的泛滥平原。
The floodplain of the Mekong is home to many species.
湄公河的泛滥平原是许多物种的家园。
泛滥平原；河漫滩
先理解核心含义，再看它在真实句子里的用法。
泛滥平原；河漫滩
floodplain
The floodplain of the Mekong is home to many species.
湄公河的泛滥平原是许多物种的家园。
泛滥平原；河漫滩:靠近河流的低洼平原,在多雨季节或高潮时易被淹没。
A low-lying plain adjacent to a river subject to flooding during periods of high rainfall or at high tide.
河流附近的低平原,主要由河流沉积物形成,易发生洪水
a low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding
After the heavy rains, the floodplain was covered with several feet of water.
大雨过后，泛滥平原被几英尺深的水覆盖了。
Farmers know that planting on the floodplain is risky because the river can rise quickly.
农民们知道在泛滥平原上种植有风险，因为河水可能会迅速上涨。
The city built new homes on the floodplain without considering the danger of seasonal floods.
这座城市在泛滥平原上建了新房屋，却没有考虑季节性洪水的危险。
用 of 连接河流名称，表示某条河的泛滥平原。
The floodplain of the Mekong is home to many species.
湄公河的泛滥平原是许多物种的家园。
介词用 on，表示在泛滥平原这个区域上。
The town was built on the floodplain.
这座城镇建在泛滥平原上。
Not this
The city is on floodplain.
Use this
The city is on a floodplain.
floodplain 是可数名词，表示具体的一片泛滥平原，单数形式前需要加冠词 a；中文没有冠词，所以容易漏掉，但英语中不能直接说 on floodplain。
Not this
The floodplain destroyed many houses last year.
Use this
The flood destroyed many houses last year.
floodplain 指河边的低洼平原（土地），不是洪水本身；表示洪水淹没、毁坏房屋时要用 flood。这里要表达的是‘洪水毁坏了房屋’，所以主语应改为 flood。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
河流泛滥平原
The town is built on the river floodplain, so it floods in spring.
这座城镇建在河流泛滥平原上，所以春季会发洪水。
泛滥平原管理
Floodplain management helps reduce damage from future floods.
泛滥平原管理有助于减少未来洪灾造成的损失。
泛滥平原森林
Floodplain forests provide rich habitats for wildlife.
泛滥平原森林为野生动物提供了丰富的栖息地。
泛滥平原沉积物
The floodplain sediments make the soil extremely fertile.
泛滥平原沉积物使土壤变得极其肥沃。
泛滥平原开发
Floodplain development is restricted in many areas.
许多地区限制泛滥平原的开发。
发短 /ʌ/ 音 (如 blood)
Same pattern, same sound
Use floodplain naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
洪水（flood）来时被淹没的平原（plain），联想：发大水后一片平坦的漫滩。
语域：neutral 常见场景：geography、flood risk management、news floodplain 是中性偏正式的常用词，多用于地理、水文、城市规划及环境报道等书面场合；日常口语中较少出现。
rain, pain, lane 和 floodplain 的 -plain 部分押韵，均为 /eɪn/；plane 与 plain 同音但拼写不同。blood 与 flood 的拼写都含 -ood，且都读 /ʌd/；mud 与 flood 押韵但拼写不同。注意 flood 不读作 food (/fuːd/)，plain 也不读作 plaid (/plæd/)。
Dictionary facts from ECDICT, WIKTIONARY.