来自《耶鲁大学开放课程—哲学：死亡第9集第9集》

it's not just that there's no good reason to believe in dragons.

不仅没有理由相信龙的存在
The very idea of a dragon

而且从科学角度来看
may be scientifically incoherent,

龙这个说法也是不合逻辑的
at least given the science as we understand it.

至少就我们所理解的科学是这样认为的
I mean, dragons are supposed to breath fire.

据说龙可以喷火
So that must mean they've got fire in their belly.

那也是说它肚子里肯定得有火
But how does the fire continue to exist in their belly,

但是火怎么可能一直在它肚子燃烧着呢
absent--lack of oxygen?

肚子里又没氧气
Why isn't the fire in their belly busy burning

而且它肚里的火怎么没有
and destroying the membranes of their stomach or whatever?

烧坏它的胃粘膜什么的呢
All right, you could, I suppose,

我想你也许会
try to prove that dragons were scientifically impossible.

试着从科学角度证明龙是不可能存在的