Gradually increase your distance.

逐渐地增加距离。

gradually increase food consistency and variety;

逐渐实现食物的合理搭配和种类多样化；

Gradually increase to 2 or 3 total servings for the day.

逐渐增加至第2或第3份总额为一天。

Abundant water resources, water supply capacity to gradually increase.

水源充裕，供水能力逐步增强。

Nowadays, in order to save land, underground projects gradually increase.

现阶段，为了节约土地，地下工程逐渐增多。