翻译:乘客可以在飞机起飞前一小时开始办理登记手续 ( check in )`
问题描述：
翻译:乘客可以在飞机起飞前一小时开始办理登记手续 ( check in )`
答
Check in procedure starts one hour before the take-off
答
passengers can check in one hour before the plain takes off