The saying that practice makes perfect means that after you have plenty of practice in what you are doing, you will be perfect in it. He who practices a lot will master the skill more quickly than he who seldom or hardly practices.
谚语"熟能生巧"就是说进行大量的练习后，你将会做得完美。比起那些很少或从不练习的人，进行大量练习的人会更快地掌握技能。

For example, when we learn English, we have to learn grammar, words, expressions and so on. The most important thing may be how to put what we have learned into practice. If you only learn the grammar rules by heart and don't do enough exercises, it is certain that you can't understand them perfectly. But if you practice a lot, maybe you will understand them more deeply and you can find some good methods of applying them. Memorizing English words whenever time permits, we can easily memorize them and can even find a way to memorize them more quickly.
比如，我们学英语的时候，我们必须学习语法、单词、词句等等。最重要的是如何把我们所学到的知识运用到实践中去。如果你仅仅牢记语法规则而不做足够的练习，你肯定不能充分理解它们。做大量练习之后，你可能就会深刻理解它们，而且你还能找出一些好的方法去运用它们。只要时间允许就去记英语单词，这样我们能轻易记住它们，甚至能找出一种更快的记忆单词的方法。

There is another example. A famous singer can sing very well. Of course, his talent is very important, but practice is necessary. It is necessary to practice to make the singer sing better and better.
还有一个好例子，一个著名的歌手歌唱得非常好。当然他的天赋是非常重要的，但是练习也是必要的。正是练习使这位歌手唱得越来越好。

It is evident that practice is important for everybody. If you want to improve your study and work, you should remember that practice makes perfect.
显然，练习对每个人来讲都很重要。如果你想提高你的学习和效果，记住：熟能生巧。