But whatever doubts fans and critics may have had that U2 had gone mainstream , or had grown too confident , were erased with the release of1991 's Achtung Baby .
U2是否已成为主流乐队，它是否过于自信，无论歌迷或评论家的疑惑如何，1991年《阿什堂宝贝》的发行令一切疑虑烟消云散。
achtung