我对后两种传染病没有天然抵抗力，至于疟疾，我也不想吞服那种令人作呕的预防药物，一切听天由命吧。

I'd no natural resistance to the latter two, and I'd opted against taking the sickening drugs for the former.

youdao

基因因素使有些人对酒精尤其没有抵抗力。

Genetic factors make some people especially vulnerable to alcohol dependence.

youdao

当新型流感病毒进入到环境中以后，人类对它们没有任何自然抵抗力。

When new influenza viruses are introduced into the environment, humans do not have any natural immunity to protect against them.

youdao