我们应清醒认识到，世界上没有免费的午餐。
Instead we should be aware the fact that there is no free lunch in the world.
一个越早明白越好的道理是，世界上没有免费的午餐。
One thing the earlier you learn the better it is, there is no such thing as a free lunch in the world.
如果你明白世界上没有免费的午餐这个道理的话，你就不会期待这样的事情了。
You realize that tomorrow will never come. If you know there is no such thing as a free lunch you will never expect that.
如果你明白世界上没有免费的午餐这个道理的话，你就不会期待这样的事情了。
You realize that tomorrow will never come. If you know there is no such thing as a free lunch you will never expect that.
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