good samaritan
乐善好施的人；主动伸出援手帮助他人的人
口语·赞扬乐善好施者
英文释义
someone who selflessly helps others, especially strangers, in need
例句
She's a real good samaritan, always helping homeless people on weekends.
典故来源
同"good Samaritan"，源自《圣经》比喻，强调无私助人。