热心

例句：

1. 1. He is a very kind and warm-hearted person.
   他是一个非常善良和热心的人。
2. 2. She is always willing to help others with her heartfelt enthusiasm.
   她总是怀着满腔的热情乐于助人。
3. 3. The volunteer group is full of enthusiastic volunteers who are eager to serve the community.
   这个志愿者团队充满了充满热情的志愿者，他们渴望为社区服务。