It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.

可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。

youdao

It is impossible for us to be immune from outside influence.

我们会受到外界的影响。

youdao

For women, the association may be attributable to changes in immunity that resulted from excess abdominal fat; in men, the immune system did not appear to be involved.

对于女性来说，这一联系可能归因于腹部脂肪过多导致的免疫力变化；对于男性来说，（这种联系）似乎并不涉及免疫系统。

youdao

The reason for that complexity is because your immune system needs to be able to respond to all the potential foreign invaders that we could encounter.

整个系统之所以如此复杂是因为,免疫系统需要应对所有,我们要面对的来犯之敌

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