Standard practice for security checkpoint metal detector screening of persons with medical devices 带医疗设备的人员安全检测点金属探测器屏蔽的标准规程
Admission to the venue will begin one hour prior to the show . we appreciate your cooperation with the necessary security checkpoints 提前一小时开始验票并入场，入场观众须接受安全检查。
Christmas will b late this year , with so many new security checkpoints , the trip that used 2 take one night should take about eight weeks now 圣诞节今年会来的晚些，因为有这么多新设置的安全关卡，过去只要一天的旅程现在要花八个星期。
As the man approached the airport security checkpoint here on wednesday , he kept picking up and putting down his backpack , touching his fingers to his chin , rubbing some object in his hands and finally reaching for his pack of cigarettes , even though smoking was not allowed 那个人渐渐靠近机场安检处，他一直在背后上上下下的搜寻，摸摸手指，又摸摸下巴，从手上拿走某个东西，最后拿到他后背的那包雪茄，尽管机场禁止抽烟。
