Changjiang and Huaihe valleys

• 江淮地区

Changjiang and Huaihe valleys的用法和样例：

例句

1. The constant floods and droughts in the Yangtze and Huaihe river area during the Ming and Qing dynasties had resulted from the combined action of many elements.
   明清时期江淮地区水旱灾害的频繁发生是多种复杂因素共同作用的结果。