Margarine can be substituted for butter in this recipe.

做这道菜可以用人造黄油代替黄油。

Honey can be substituted for sugar in this recipe.

在这种烹饪法里蜂蜜能代替糖。

Where 2.0, 3.5, or 4.0 can be substituted for the X's above?

可以用2.0,3.5或者4.0取代上面的x。

The joy of flying can be substituted for the fear of running away.

于是，飞翔的快乐可以被逃跑的恐惧所替代。

Sequential isometric contractions can be substituted for weight lifting.

连续等距收缩可以取代举重。