Mr. Malcolm Stewart, and it looks like a personal letter.
Malcolm Stewart先生收 ,而且看来是一封私人信件。
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.
火灾过后,所有的管道和龙头都被标得一清二楚,而且加入劳动队伍的新工人在开始工作之前要接受有关的安全教育。