regrettably

adv.

令人遗憾地，使人懊悔地；

1. He said that they had regrettably been obliged to give up the scheme for lack of support.
   他说因为缺乏支持，他们遗憾地被迫放弃了这项计划。
2. Regrettably, the experience of charities like the Battersea Dog's Home shows that many people rush into buying a dog without considering the four questions outlined above.
   遗憾地，像巴特西狗之家这类的慈善机构的经验可证明很多人没考虑以上略述的四个问题就匆忙去买狗。

There is, regrettably, more than one interleukin 4
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