他们可能是被动地参与，可能只是看到了某一个事件，但他们的肾上腺素没有分泌那么多，个人身体没有受到威胁。

They might be more passively involved, having just maybe viewed an incident, but they don't have that adrenaline pump, not being personally threatened.

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脂肪组织不仅是被动的能量储存器官，也是能分泌多种生物活性因子的内分泌器官。

Adipose tissue stores energy passively, and also ACTS as an endocrine organ secreting multiple biological activity factors.

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