sacrificially

例句：

1. 1.He sacrificed his time to help his friend.
   他牺牲了自己的时间来帮助朋友。
2. 2.The decision was made at the expense of many lives.
   这个决定是以许多人的生命为代价的。
3. 3. We must always remember to act sacrificially in our work.
   我们必须始终记住在工作中要做出牺牲。