Memory is important for everyone in all ages. How to improve it? It is a complex question. I have several suggestions. Firstly, have enough rest.

Memory is important for everyone in all ages. How to improve it? It is a complex question. I have several suggestions. Firstly, have enough rest. Enough sleep can make sure brain works normally, because when people sleep, their brain and other organs also can rest. Enough rest can provide enough energy. Secondly, keep always thinking. Do not get used to the current situation. Keeping thinking when meets things can exercise brain. Thirdly, eat some healthy food that is good for memory, such as, radish, cabbage and spinach. I think these are helpful to improve memory. 
记忆力对于每个年龄段的人都是很重要的。如何提高记忆力呢？这是一个复杂的问题。我有几个建议。首先，充足的休息。充足的睡眠可以保证大脑正常运作，因为人在睡觉的时候，他们的大脑和其他器官也得到了休息。足够的休息可以为它们提供充足的能量。其次，保持思考。不要安于现状。遇到的事情时要坚持思考可以锻炼大脑。第三，吃一些健康的、对记忆力有好处的食物，例如，萝卜，白菜，菠菜。我觉得这些都是有助于提高记忆力的。