绝大多数围绕植物如何自我防卫展开，例如释放毒素或者在附近无关植物被吃掉时将资源集中于它们的免疫系统。
Much of it described how plants defended themselves, producing toxins and concentrating resources on their immune systems when unrelated neighboring plants were eaten.
燃烧时不释放毒性气体或二恶英。
当细菌停滞时，它们会繁殖并释放毒素和臭气。
When bacteria stagnate, they multiply and give off toxins and stinky odors.
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