后天的

We do not know which behavioural traits are inherited and which acquired.

我们不知道哪些行为特征是遗传，哪些是后天养。

This was true whether applied to a congenital defect, such as syndactyly, or an acquired defect, such as a burn contracture.

它们应用于诸如并指先天缺损或是烧疤痕挛缩类后天缺损修复，往往都没错。