頭等艙的用法和樣例：
例句
-
他說經濟艙太不舒服了，所以外出旅游他總是坐頭等艙。
He always travels first class, because he says tourist class is too uncomfortable. -
她想坐頭等艙旅行，她一定自以為很了不起。
She wants to travel first-class: she must have delusions of grandeur. -
頭等艙中不準吸煙。
Smoking is not allowed in first class.
