1、We will maintain the balance of world power at all costs.
2、All of us should be grateful to what nature offers us, obey the natural laws, maintain the balance of nature and ban burning any harmful l substance and giving off carbon dioxide through the chimneys.
3、On top of these misguided policies, Japan was going through its own political turmoil and, through no fault of President Obama's, thus unavailable to help maintain the balance of power.
4、Domestic cats average about four laps per second, with each lap bringing in about 0.1 milliliters of liquid, while big cats naturally lap more slowly to maintain the balance of gravity and inertia.
