2. The
favored ones spend a lot of their new income on food, and unless supply expands very quickly, prices shoot up.
这些幸运者们把许多新收入花在食物上,由于供给没有快速增长,食物的价格顿时暴涨。
3. More than 300 human genes show strong evidence of recent mutations that
favored survival in the face of new threats or novel environments, and consequently spread quickly through populations.
有超过300个人类基因有力的证明了最近的变异有利于人类在新的威胁和环境下生存,因此这些变异迅速在人类传播。