Thus just as earlier theories have explained the mobility of the continents, so hot spots may explain their mutability (inconstancy).

因此，正如理论解释了大陆流动，热也可以解释它们易变（不）。

This outward mutability indicated, and did not more than fairly express, the various properties of her inner life.

这种外在易变表明，但只是公平地表达了她内心生活各种特。