The sheets contain useful information to first aiders and the emergency services.

这些表包含一些关于急救和紧急服务的实用信息。

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If the gel is not available, first aiders are advised to cool down the wound by pouring on water.

BBC: Saving your skin

St John Wales volunteers, including 140 first-aiders, eight nurses and six doctors, carried out one of their biggest deployments outside Christmas and New Year.

BBC: Welsh joy over Grand Slam victory

Two aiders and a rat's nest of other equipment hanging off my harness made getting through the trees to the ground the crux of the day.

WSJ: Training for the Big Wall | By Michael J. Ybarra