Do not confuse resign and retire. If someone resigns from their job, they leave it after saying that they do not want to do it any more. You can resign from your job at any age, and perhaps start another job soon afterwards. When someone retires, they leave their job and stop working, often because they have reached the age when they can get a pension. When professional sportsmen and women stop playing sport as their job, you can also say that they retire, even if they are fairly young.

不要混淆resign和retire。resign指辞职，可以发生在任何年龄，也可能很快就开始从事另一个工作。但retire表示退休，是指到了一定的年龄可以领取养老金而停止工作。职业运动员退役，即使年龄还很小，也可以使用retire。