我是高中八班班長李華，擔任英文翻譯

I am 18 high class monitor Li Hua 班長[bān zhǎng].

詞典監視器; 班級監視器（學生班級的班級）。

I'm Li Hua, the monitor of Class 8, senior one.

I am the monitor of class eight, grade one in senior high school, Li Hua.

I am 18 high class monitor Li Hua