frog mirror meaning in English

蛤蟆镜

In order to safeguard the masses to be safe , besides representative team train sports and sports teaching activity , this swimming pool forbids carrying other clothes , frog shoes , dive under water frog mirror ( swim hydroscope subject to the limits generally ) , life buoy , water wing , ball , water toy and other to enter pool by article that check and approve
为维护大众安全，除运动代表队训练及体育教学活动外，本泳池禁止携带其他衣物、蛙鞋、潜水蛙镜（一般游泳水镜不在此限）、救生圈、游泳圈、球类、水上玩具及其他非经核准之物品入池。