生物医药大词典
英文: Appointment must be made beforehand.
中文: 拜访媒体人士必须事先做好预约。英文: I booked a ticket beforehand .
中文: 我事先预定了一张票。英文: I had made preparations beforehand .
中文: 我预先作了准备.英文: It had been arranged beforehand .
中文: 那事已提前安排好了。英文: I had made reservations beforehand.
中文: 我已提早一步预订了。