As the living condition went worse and worse, and the resources were limited, to live on and lead a better life, both of them want to conquer the other.
As the living condition went worse and worse, and the resources were limited, to live on and lead a better life, both of them want to conquer the other.
由于生活环境的恶化和资源的短缺，为了生活下去并且赢得更好的生活条件，双方摩拳擦掌都想要征服对方。）