"free lunch" in Chinese (Simplified)
免费午餐天下没有免费的午餐 (比喻用法)
Definition
“Free lunch” 可以指免费提供的午餐，但多数情况下用来表达世上没有免费的东西，总有隐形代价。
Usage Notes (Chinese (Simplified))
口语表达，多见于'天下没有免费的午餐'，意指所有好处背后都有代价。现代英语中很少指真正的午餐，主要为比喻用法。
Examples
At the event, they served a free lunch to all participants.
在活动上，所有参与者都吃到了**免费午餐**。
The hotel offers a free lunch with every booking.
酒店每次预订都赠送**免费午餐**。
He learned that there is no such thing as a free lunch.
他明白了“天下没有**免费的午餐**”。
Remember, when someone promises you easy money, there’s probably no free lunch.
记住，有人承诺你轻松赚钱时，很可能没有**免费午餐**。
She got a job perk, but soon realized it wasn’t really a free lunch—she had to work even harder.
她得到了工作的福利，但很快意识到那并不是真正的**免费午餐**——她得更加努力工作。
People love the idea of a free lunch, but there’s always a catch somewhere.
人们都喜欢**免费午餐**的概念，但总有隐藏的条件。