With the trend towards global warming, it made the harmful levels of wheat stem sawfly for crops was increasing trends.
气候变暖的阶段性趋势使麦茎蜂对麦类等作物的危害程度有加重的趋势；
With the trend towards global warming, it made the harmful levels of wheat stem sawfly for crops was increasing trends.
气候变暖的阶段性趋势使麦茎蜂对麦类等作物的危害程度有加重的趋势；
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