I eat at least three meals a day.

我一天至少吃三顿饭。

We take three meals a day .

我们每天吃三顿饭。

We usually eat three meals a day.

我们通常一日吃三餐。

We have three meals a day.

我们每日吃三餐。

All of the subjects ate three meals a day.

每位试验者每天吃三餐。