/ɪmˈpel/
if an idea or feeling impels you to do sth, you feel as if you are forced to do it
~ sb to do sth
He felt impelled to investigate further.
他觉得有必要作进一步调查。
~ sb (to sth)
There are various reasons that impel me to that conclusion.
有各种原因促使我作出那个结论。