说一个与讲演主题相关并且富有戏剧性的故事，或者选用从新闻中读到的内容，比如某个架子工因为没有系好安全带而摔死了等。

Telling a dramatic story related to the subject, perhaps something read in the press. E. g. How a Scaffolder fell to death because he didn't tie on.

凡此工地从事作业的起重工、电工、架子工均需持证上岗，另需提交其证件以备案。

Riggers, electrician and frame workers working in the field site must possess relative certificates and submit the other credentials to put on record.