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1·They compete with one another but provide sufficiently different services that they can do so cooperatively rather than antagonistically.

它们彼此竞争，但是提供各不相同的服务，它们以协作而不是敌对的方式提供服务。

2·Multiple signaling transduction pathways are involved in plant defense responses to insect herbivores, and they can interact with each other, either synergistically or antagonistically.

多种信号途径参与昆虫取食诱导的植物防御反应，它们之间的相互作用协同或拮抗。