The ropes let swimmers cling to the device or climb on top of it until a lifeguard arrives on the scene .
这种设备上的绳索使游泳者能够抓紧它或爬上其顶部,直到救生员抵达现场为止。
He raised money to set up his first investment company by taking summer jobs as a lifeguard on rockaway beach , a down at heal neighbourhood in queens , and later installing sprinkler systems .
If somebody is drowning and flailing around in panic , a lifeguard knows to just stay back for a few seconds and wait until they give up .
如果有人快淹死了在恐慌中挥动救生员就停留几秒钟等到他们放弃。
Maintenance crews remove lifeguard towers from a beach in port aransas , texas , in preparation for high tides from hurricane alex
德克萨斯州阿兰瑟斯港,维修人员从海滩上移走救生员望塔,为亚历克斯飓风的高潮作准备。
A human lifeguard can keep but a single person afloat . Emily , by contrast , is buoyant enough to save five at a time .
一位人类救生员只能使一个人浮在海上;而emily的浮力足以同时拯救五人。
It is powered by an electric impeller of the kind used on jet skis , can travel 12 times as fast as a lifeguard , can make tight turns in choppy waters and can run for up to 130km on a single battery charge .
" Dogs are useful in containing the physical fatigue of the lifeguard , to increase the speed at which casualties are retrieved , to increase the security of both the casualty and of the lifeguard , " gasbarri said .
His put-downs have included : " if your lifeguard duties were as good as your singing , a lot of people would be drowning , " and : " that was one of my favourite songs ...... not any more . "