airline coach service

airline coach service 指的是航空公司提供的经济舱服务，而 first-class service 或 business-class service 则指的是高级舱位服务。

1. The airline coach service offers comfortable seating and in-flight entertainment for budget travelers.
   许多航空公司正在改进他们的经济舱服务以吸引更多顾客。