The local department of public health says it's too difficult to maintain social distancing on porches and at front doors.

当地公共卫生部表示，在门廊处和家门前，民众之间很难保持适当的社会距离。

And with those numbers then, the contact tracers -- And that's what we really redoubled the workforce and really expanded, more than doubled, to support the department of public health to do that contact tracing.

然后有了这些数字，接触者追踪器——这就是我们真正加倍工作的原因， 并且真正扩大了一倍多， 以支持公共卫生部门进行接触者追踪。