@mattyglesias In practice, many who do make binding rules model them after CDC guidance. Some other people might sometimes follow them even if not binding. That's what it means. You're welcome.
@mattyglesias在实践中，许多制定约束性规则的人在CDC指导下对其进行建模。有些人有时可能会跟随他们，即使没有约束力。这就是它的意思。不客气。