no-frills
adjective [ before noun ] uk/ˌnəʊˈfrɪlz/ us/ˌnoʊˈfrɪlz/
朴实无华的；只提供最起码必需品的
A no-frills product or a service is basic and has no extra or unnecessary details.
It's a no-frills store supplying only basic goods at affordable prices. 这家商店价格公道，只卖最基本的必需品。
a no-frills airline 只提供必需品的航班