无私的

例句：

1. 1. The teacher was very unselfish in helping the students with their homework.
   老师在帮助学生做作业时非常无私。
2. 2. She is an altruistic person who always puts others' needs before her own.
   她是一个利他主义者，总是把别人的需要放在自己的前面。
3. 3. The manager made a decision that benefited everyone in the company without expecting any recognition.
   经理做出了一个对公司所有人有利的决定，却没有任何回报。