dining room指家庭中的餐厅，restaurant指餐馆饭馆，canteen指食堂

如：My family have dinner in the dining room.

我们家在餐厅吃饭。

They go to the restaurant to have dinner.

他们去饭店吃饭。

The professor sometimes dines at the student canteen.

那位教授有时在学生餐厅用膳。