I don't think it's necessary for everyone to learn first aid. Most people won't ever be in a situation where they need to use it. Usually, professional medical help is close by and can handle emergencies better. Also, some people might panic and not remember what to do, even if they have been trained. Plus, learning first aid can take a lot of time and money, which could be spent on other important things.
我认为并不是每个人都有必要学习急救。大多数人不会遇到需要使用它的情况。通常,专业医疗帮助就在附近,可以更好地处理紧急情况。而且,有些人可能会感到恐慌,甚至在接受过培训后也会忘记该怎么做。此外,学习急救可能需要大量的时间和金钱,这些资源可以用于其他重要的事情。