求翻译：制作午餐需要设备,材料费用等成本，还要付出劳动的。所以午餐至少是所有成本费加上加工费。如果是免费就没人会做，不做当然就没有午餐了。所以说天下没有白吃的午餐是什么意思？

Production lunch requires the cost of equipment, materials costs, labor will have to pay. So lunch is at least cost fee plus processing fees. If it is free no one will do, do, of course there is no lunch. So there is no such thing as a free lunch

Make a lunch and dinner for a device, the material costs, labor will have to pay. So, lunch is at least all costs and processing fees. If you are free to do, no one will not be done, of course, there will be no lunch. That is why we say that there is no free lunch: The

The manufacture lunch needs the equipment, costs and so on material expense, but also must put in the work.Therefore the lunch is at least all cost prices adds on the processing charge.If is free nobody can do, did not do certainly does not have the lunch.Therefore said the world has not eaten witho

Making lunch needed equipment, material costs, and other costs, but also labor. Lunch is at least all costs plus the processing fee. If no one is free to do, won't do, of course, there is no lunch. So there's no such thing as a free lunch

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