尽管不是强制性的，但是它时管理部署的最简单的方法。
Although not mandatory, it is certainly the easiest way to manage the deployment.
并不是所有运用在各种方法中的字段都是强制性的，因此您的过程必须反映您选择的是哪个选项。
Not all these fields used in the various methods are mandatory, so your process must reflect which option you select.
强制性的合作之路——其他灵长类动物没有采用这个方法——导致了社会规则和他们的强制实行，还有人类的无私和语言。
The path to obligatory cooperation - one that other primates did not take - led to social rules and their enforcement, to human altruism and to language.
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