And, under a microscope, both plastics showed almost no signs of physical degradation.

而且，在显微镜下， 这两种塑料几乎没有物理降解的迹象。

Polygamy is another physical degradation; and a plausible argument for a custom, that blasts every domestic virtue, is drawn from the well-attested fact, that in the countries where it is established, more females are born than males.

一夫多妻制是另一种生理退化。一个反对所有家庭美德的习俗的合理论据来自一个充分证明的事实，即在建立这种习俗的国家，出生的女性多于男性。