The universal red cell donor has Type O negative blood type.

通用红细胞捐献者血型为 O 型阴性血。

So again, this is a negative type of meaning for these words.

因此，这又是这些词的否定含义。

Yeah, and we also use this expression 'prone to' to describe certain negative types of behaviour that people have in their personality.

是的，我们也用 prone to 这个表达来描述人们性格中某些负面的行为。