将“regrettable"翻译成中文

However, as regrettable as this may seem, reservations do not have to be justified, and in fact they seldom are

但是,似乎很可惜,保留无需说明理由,事实上保留很少说明理由。

These regions have regrettably become a hub for international drug trafficking.

不幸的是,这些地区现已成为国际贩毒中心。