- - Why? Why is this happening? - We still don't know.
-为什么 怎么会出现这样的事 -还不知道 - But, emm.
但是 - It may have something to do with biology.
也许和生物学有关 - What do you mean, biology?
您说生物学是什么意思 - A biological component.
就是生物构成 - You know, something in their DNA.
在他们的DNA里 - In their DNA, can you elaborate on that, please?
他们的DNA 您能详细说一下吗