"Three dishes" in Engpsh can be translated as "three courses" or "three entrees." This term is used in the context of a meal, and it refers to three main dishes that are served, typically in succession.

The origins of this term can be traced back to the traditional French cuisine, where a meal was typically served in several courses, each consisting of a series of dishes. In this context, the main course would usually consist of three dishes, which could include a soup, a main protein dish, and a dessert.

Here are a few examples of how "three courses" or "three entrees" can be used in Engpsh, along with their translations in Chinese:

"We ordered the three-course meal at the restaurant, which included a salad, a steak, and a chocolate mousse for dessert." (我们在餐厅点了三道菜的套餐，包括沙拉、牛排和巧克力慕斯甜点。)

"The wedding reception featured three entrees: a seafood platter, a vegetarian pasta, and a chicken dish." (婚礼招待会上提供了三道主菜：海鲜拼盘、素食意大利面和鸡肉菜肴。)

"I'm not very hungry, so I'll just order one entree. Can you recommend something from the three courses on the menu?" (我不是很饿，所以我只想点一道主菜。你能推荐菜单上的三道菜中的什么吗？)