host resistance to insect attack makes use of the natural built-in protection.5069

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hostresistancetoinsectattackmakesuseofthenaturalbuilt-inprotection.5069hostresistancetoinsectattackm

host resistance to insect attack makes use of the natural built-in protection.5069
host resistance to insect attack makes use of the natural built-in protection.5069

host resistance to insect attack makes use of the natural built-in protection.5069
主持抵抗昆虫侵害充分利用了自然本身的防御能力