no free lunch

常见例句

Compared to the price is right component, the no free lunch aspect of the EMH has fared better.
与“价格是正确的”那部分相比，效率市场假说中“没有免费的午餐”部分更走运一些。
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But making things simple for the user of a product means that someone else must pay the ethereal price for the truism that there is no free lunch.
但为购买产品的用户简化了购买过程即意味着要有其他人为这部分无形的价格买账，世上没有免费的午餐，这是一个不言而喻的道理。
No free lunch is involved, but an actor-based framework does make concurrency programming, and leveraging multicore processes, much easier.
世上没有免费的午餐，但基于角色的框架确实使并发编程以及利用多核进程变得更加简单。

figuring out there is no such thing as a free lunch but Markowitz tells us that diversification is a free lunch.
知道世上没有免费的午餐这回事,但马科维茨称分散投资是免费的午餐
耶鲁公开课 - 金融市场课程节选

America's bankruptcy laws are relatively friendly to debtors, but they offer no free lunch.
ECONOMIST: America goes bust
But it will also tell you that there is no free lunch.
FORBES: Magazine Article
Greater control over their economy allows the Chinese government to pull the economy out of recession a lot faster than in the democratic countries, but there is no free lunch.
FORBES: Getting Your Arms Around China And Japan