当我们身边有人倒下的时候，我们可以通过专业的知识去对他进行抢救，而不是傻傻地站在那里一动不动什么也做不了，这种无助的感觉太让人感到可怕了。
When somebody falls down, we can conduct first aid with our professional knowledge, instead of doing nothing and only standing there; this helpless feeling is really frightening.