农民请教专家来查明影响他苹果园的病害。
The farmer consulted an expert to identify the pathology affecting his apple orchard.
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解释
pathology 在此指植物病理学的具体应用，即研究导致果树患病的病原和机制。
The farmer consulted an expert to identify the pathology affecting his apple orchard.
pathology 在此指植物病理学的具体应用，即研究导致果树患病的病原和机制。