Biological agents could be a different problem.
生物制剂可能是不同的问题。
Natural enemies, especially species of Torymidae, are considered as efficient biological control agents.
它有许多天敌，尤其是长尾小蜂，被认为是有效的生物防治手段。
Natural enemies, especially species of Torymidae, are considered as efficient biological control agents.
它有许多天敌，尤其是长尾小蜂，被认为是有效的生物防治手段。
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