"Three meals a day" is a common phrase used in Engpsh to describe the three main meals of the day: breakfast, lunch, and dinner.

来源：这是一个普遍使用的英语短语，用来描述一天的三餐：早餐、午餐和晚餐。

例句：

I always make sure to have three meals a day to maintain a healthy diet.
我一直记得一天要吃三餐，以保持健康的饮食。


My grandmother always insists on three meals a day, no matter what.
我的祖母总是坚持一天要吃三餐，无论如何。

Many people find it difficult to stick to three meals a day with their busy schedules.
许多人发现，因为忙碌的日程，很难坚持一天吃三餐。