关于level 1学习中遇到的一句不太明白的英文 英文

aandb

Bonds that are noncallable for the issue's life are more common than bonds that are nonrefundable for life but otherwise callable.

这句话最后的but otherwise callable应该怎么理解呢？谢谢

gescheitgyy

"non-callable bonds" are more common than "non-refundable but callable bonds".