求翻译：上周五学校邀请林海博士给同学做了发生事故如何实施急救的讲座，内容如下，首先检查事故现场是否安全，其次看见有人严重受伤，应立即播打急救电话，另外博士还教了我们一些简单的急救措施，这次的这个讲座使我受益匪浅是什么意思？

On Friday the school invited Dr. Lin Hai to the students how to do a first aid accident lectures, as follows, first check the scene is safe, followed by seeing someone seriously injured should immediately broadcast emergency calls to fight, the other Dr. also taught us some simple first aid measures

Last week Dr. yingui invited 5 schools to students who do the incidents of lectures on how to render first aid, which reads as follows, first check whether it is safe, and this was followed by the scene of the accident saw that there was serious injuries, and should be immediately broadcast, first a

How last Friday did the school invite boundless forest doctor to do to schoolmate has had the accident to implement the first aid the course, the content is as follows, first inspected the accident scene was whether safe, next saw some people to be injured seriously, should broadcast immediately hit

On Friday invited Dr Lin gave the students a lecture on how to give first aid, which reads as follows, first check whether the accident scene safety, secondly see people seriously injured, should immediately broadcast medical emergency, and also has taught us some simple first aid measures, this tim

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