求翻译：人无远虑,必有近忧。人好的时候要找一条备胎，人不好的时候要找一条退路；人得意的时候要找一条退路，人失意的时候要找一条出路！­是什么意思？

Without foresight, there shall be immediate worries. Good time to find a spare tire, when poor people are looking for a retreat; people proud to find a retreat, people down to find a way out! ­