商务舱用英语怎么说?

Business class.

经济舱 [简明汉英词典]
tourist class

头等舱 [简明汉英词典]
first-class stateroom cabin
first-class
saloon-cabin

商务舱 [简明汉英词典]
business class

commerce class

头等舱：First Class （cabin）-可省略。
经济舱：Economy Class （cabin）

商务舱：business class=executive class
经济舱：economy class=coach
客舱：cabin
驾驶舱：cockpit

商务舱、头等舱
business class

business class

economy class 经济仓

Business class 飞机上

delux suite 船上