英语题目 求解When something you want is not on hand, look for some

英语题目 求解
When something you want is not on hand, look for something else that you already have to take its place. Suppose you are packing your lunch for tomorrow and want a butter sandwich. You are out of butter. Have a cheese sandwich instead so that you can use all of the cheese. Learn to fix broken boys instead of just throwing them away. With a little thought, you can make something do, instead of buying something new.