Could you put your seat upright?
可以請您將椅背豎直嗎?
Would you mind fastening your seatbelt?
可以請您系上安全帶嗎?
Could you put your luggage in the locker?
您可以把行李放在柜子里嗎?
Do you prefer beef or fish?
您要牛肉還是魚肉?