staple是什么意思？

We're a traditional British restaurant so there are some staples (主菜) that will remain essentially unchanged.

But there is also pressure to buy local and save on food miles, which means we take our vegetables from the local markets, and there are a lot that work well with British staples

Barley was an unexpected find: the crop was domesticated in Western Eurasia and didn't become a staple food in central China until about 2,000 years ago, according to the researchers.Based on that timing, they indicate barley may have 34 arrived in the re

In Nigeria, where tomatoes are a staple of local diets, the insect's effects are devastating.