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| drought control Measures taken to prevent, mitigate or eliminate damage caused to the ecosystem, especially crops, by a sustained period of dry weather (用于预防、减轻或消除因长期缺水的天气而导致危害生态系统的方法，尤其是指对农作物而言。) | |||
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干旱控制 : 1 phrase in 1 subject |
| Earth sciences | 1 |
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