头等座用英语怎么说

"First class" is the English term for "头等座".
It originated from the distinction between the most luxurious and expensive seats on trains and later on airplanes, compared to other less expensive classes of travel.
Example sentences in English with Chinese translation:
I prefer to fly first class because of the extra legroom.
我喜欢坐头等舱，因为有更多的腿部空间。
The first-class lounge is only available to premium passengers.
头等舱休息室只对贵客开放。
He always travels first class, no matter the cost.
他无论花多少钱都喜欢坐头等舱。