求翻译：所有人员着装必须符合要求，不准穿短裤、凉鞋和拖鞋登机，救生背心只需简单的按照马甲的穿着方法，穿救生背心时请勿穿反，腰带要在穿着者的前面用卡扣固定，是什么意思？

Dress of all staff must meet the requirements, are not allowed to wear shorts, sandals and slippers boarding, in accordance with the vest wear life vest simply to wear a life vest Do not wear anti-, belt buckle fixed in front of the wearer's ,

All staff must be in compliance with the dress, and not allowed to wear Shorts, sandals and slippers check-in, and life-saving vest with a simple dress in accordance with the method of the thread, when life-saving vest, please do not wear the belt to wear in the front of the card, secured

All personnel clothing must conform to the requirement, does not permit to put on the short, the sandals and the slipper boards craft, the lifesaving vest only needs simply is putting on the method according to the waistcoat, puts on when the lifesaving vest please do not put on instead, the waistba

All clothing must meet the requirements, are not allowed to wear shorts, sandals and slippers to board the plane, according to the vest of vest simply wearing, wearing life vests do not wear when anti-, belt with clip fixed in front of the wearer,

正在翻译，请等待...