President of the student union

美 [ˈprezɪdənt əv ðə ˈstuːdnt ˈjuːniən]英 [ˈprezɪdənt ɒv ðə ˈstjuːdnt ˈjuːniən]

1

Peter : Yes , I was president of the student union of our university , and I joined the Communist Party of China in my junior year .

是的，我在大学里担任过学生会主席，并且在大三的时候还入了党。
2

But after passing the national college entrance exam on the third try , Mr. Ma gained admission to a local teachers ' college , where he excelled and was elected president of the student union .

在第三次参加高考之后，马云被当地的一所师范学院录取。他在学校表现突出，当选学生会主席。
3

I was class president and chairman of the Texas Student Union .

我是班长和德州学生会的主席。