Farmers are at the mercy of the forces of nature.

农民靠天吃饭.

And it will not stand up to the forces of nature.

这座桥难以与自然力相抗衡

The Gregorian calendar is not in harmony with the forces of nature.

格里高利历法(公历)与自然力量并不融洽.

Sun Fire The hero calls upon the forces of nature to affect enemy casters .

太阳烈焰英雄召唤自然力量影响敌方咒语部队（？

Part of the motivation behind the quest to marry relativity and quantum theory - to produce a theory of quantum gravity - is an aesthetic desire to unite all the forces of nature.

结合相对论和量子理论，提出一种量子引力的理论，它的动机之一是出于美学上的对统一各种自然作用力的渴望。