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Instructors and lifeguards are onsite for guidance and safety .

现场有指导教练及救生员。

Swim only in areas protected by lifeguards .

只可以在有救生员的区域游泳。

Hundreds of specially trained dogs form italy 's corps of canine lifeguards .

目前意大利共有数百只受过特训的救生犬。

Lifeguards arethe doctors of our beaches .

救生员就是我们海滩上的医生。

Lifeguards must know how to rescue drowning swimmers .

救生员必须知道如何营救溺水者。