and those initial stages of the relationship

和关系的最初阶段
in part Because it's a little hard to follow couples over time.

部分是因为长期跟踪情侣很困难
Imagine the sort of heisenberg-esque problems

试想一下那些海森堡式的问题
we would get carefully following romantic couples over time

我们要长期小心地跟踪情侣
and interfering with them to ask questions and make observations.

还要对他们进行提问并观察
It would be hard to let this couple naturally this relationship naturally unfold.

这很难让情侣自然地发展这段关系
So, we really get--so, really the

所以我们事实上
focus of many of these experiments

更多地将实验集中在
is on initial attraction.

研究最初的吸引部分
That's why I always say my lecture is on love,

这也是我为什么总说我的演讲讲的是爱情
The definition of terms is about love,

这些术语的定义也是关于爱情
but the experiments really are

但实验却