When talking about the hero, people will think about the person who saves the world, such as superman and batman, they care about the public’s lives and interest all the time. In the real life, people believe that a hero at least can make great influence to the society, like the scientist. But in my opinion, some true heroes are easy ignored, they are doing the ordinary jobs while making great contribution to the society. The city cleaners are the classic ones, they beautify the city and bring comfort to the public. Though they are nobody, they are doing the great job. They are heroes and should be praised. 
在谈到英雄的时候,人们会想到那些拯救世界的人,如超人和蝙蝠侠,他们关心公众的生活和利益。在现实生活中,人们认为英雄至少能带来深刻的社会影响,如科学家。但在我看来,一些真正的英雄是很容易被忽视,他们做着普通的工作但是对社会作出巨大贡献。城市清洁工是最典型的,他们美化城市，给公众带来莫大的舒适。虽然他们是无名之辈,但是他们正在做着伟大的工作。他们是英雄,应该受到表扬。