Parasitism is a kind of predator-prey relationship in which one organism, the parasite, derives its food at the expense of its symbiotic associate, the host.
寄生是一种捕食者与被捕食者之间的关系,寄生者利用共生伙伴——宿主来获取食物。
2
Thus, natural selection stabilized this host-parasiterelationship.
因此,自然选择让这种寄主-寄生关系变得稳定。
3
Thanks to this parasite-hostrelationship, cancer can grow however it wants, wherever it wants.