pest attack index 为害指数
area of pest attack 发生面积
prediction of pest attack 虫害预测
pest attack
害虫袭击
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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When they predicted an attack of butterflies and insects, they had a potato variety which was resistant to this pest, and everyone was encouraged to plant that.
当他们预计有蝴蝶和昆虫的虫害袭击，他们就种植可以抵抗这些害虫的马铃薯，大家都被鼓励种这些。
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