问题描述：
英语翻译
Bieber has sung at the White House ,opened for Taylor Swift and appeared on the cover of People magazine.
其中 opened for
In 2007,Bieber entered a local competition and placed second after performing US pop singer Ne-Yo's So Sick .这句话的意思是?
Bieber has sung at the White House ,opened for Taylor Swift and appeared on the cover of People magazine.
其中 opened for
In 2007,Bieber entered a local competition and placed second after performing US pop singer Ne-Yo's So Sick .这句话的意思是?
问题解答：
我来补答展开全文阅读