1. 午餐;午饭
Lunch is the meal that you have in the middle of the day.
e.g. Shall we meet somewhere for lunch?...
我们找地方见面一起吃个午饭好不好?
e.g. He did not enjoy business lunches...
他不喜欢吃工作午餐。
2. (尤指在餐馆)用午餐,吃午饭
When you lunch, you have lunch, especially at a restaurant.
e.g. Only the extremely rich could afford to lunch at the Mirabelle...
只有非常有钱的人才能在米拉贝勒餐厅吃得起午餐。
e.g. Having not yet lunched, we went to the refreshment bar for ham sandwiches.
我们都没吃午饭,于是便去小吃店买了火腿三明治。
3. 天下没有免费的午餐
If you say there's no such thing as a free lunch, you are saying that most things that are worth having need to be paid for or worked for, and that you cannot expect to get things for nothing.
e.g. The book includes 25 Lessons for Life: Lesson 1: There is no free lunch. Don't feel entitled to anything you don't sweat and struggle for...
本书共包括25堂“人生课”:第一课,没有免费的午餐。别以为可以不劳而获。
e.g. But, even in Hollywood, there is no such thing as a free lunch.
但即使是在好莱坞也没有免费的午餐。