| 单词 | perennial irrigation |
| 释义 | perennial irrigationperˌennial irriˈgation noun [uncountable] earth science, earth science, geography a system for supplying land or crops with water all through the year |
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英语词典包含48224条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。