idiom
pay it forward
在接受了别人的善意之后,为他人做一些善事
Meaning
to do something kind for someone else after receiving kindness
Example
After receiving help from a stranger, he decided to **pay it forward** by helping someone in need.
在从一个陌生人那里得到帮助后,他决定通过帮助有需要的人来回馈这份善意。