And so what we did is, we followed men through time and measured their hormones before and after they became fathers.

而我们所做的就是，跟踪调查男性一段时间，测量他们在成为父亲前后的激素水平。

youdao

And so what we did is, we followed men through time and measured their hormones before and after they became fathers.

而我们所做的就是，跟踪调查男性一段时间，测量他们在成为父亲前后的激素水平。

youdao