- and 19 inches. - Yeah, so what?

-以及19英寸 -那又如何
If you convert inches to centimeters,

如果你把英寸换算成厘米
you'll have 64, 38, 31, and 48,

会得到64 38 31和48
the exact ages of all 4 victims.

刚好是四名死者的年龄
I think I know what this is about.

我想我知道这是怎么回事了
The man we're looking for is a highly organized defender,

我们要抓的人是个高度有条理的罪犯
but we don't yet know why or how he's choosing his victims.

但我们还不知道他挑选被害人的原因和方法
These appear to be killings of opportunity,

这些案件看似随机杀戮
yet he's researched his targets

但他调查过被害人
as though they'd been selected carefully and with premeditation.

进行了精心筛选和计划
They run the gamut.

被害人范围不一
Young and old, rich and poor, male and female.

不分贫富不论男女老少