利他

例句：

1. 1. He is a selfless person who always helps others.
   他是一个无私的人，总是帮助别人。
2. 2. She is an altruistic person who always puts the needs of others 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 teacher's selflessness and altruism have inspired many students.
   老师的无私和利他精神激励了许多学生。