You know, we describe Sentinel as a pandemic preemption system, and here we are in a pandemic.

PS：你知， 将 Sentinel 描述一个大流行病先发制人系统，而现在正处于大流行病。

Such a preemption, like that of a traveller's bag in the rack, was unquestionable; and, for additional evidence, sitting with her knees crossed, she kept one foot continuously moving a little, in cadence with the other, which tapped the floor.

这种先发制人，就像行李架上旅行包一样，是毋庸置疑；进一步证明，她双膝交叉坐着，一只脚不停地移动一点，与另一只脚节奏一致，另一只脚敲打着地板。