Well, yes - Tom is not an immortal vampire and, as far as I know, not drinking blood.

那么，汤姆是不是一个不朽的吸血鬼，而据我所知，不喝酒血液。

youdao

It's not clear why drinking guards against dementia, though it may be alcohol's capacity to maintain healthy blood flow to the brain.

至今仍不清楚为什么饮酒能预防痴呆病，也许酒具有保持大脑血液正常流动的特性。

youdao

You, however, are not a vampire bat. Because humans did not evolve such an iron-extracting mechanism, drinking blood can kill us.

然而，你并不是吸血蝙蝠。因为人类还未进化行成这样一个铁元素排除机制，所以饮血可以置人死地。

youdao