insistern.insist的变形：insist[in'sist]vi.坚持；坚持认为；强调(常与on，upon连用):I insist on his innocence.我坚持认为他是无辜的。to insist upon the importance of being punctual强调准时的重要性一定要，坚决要求；坚决主张(常与on， upon连用):He insists on being present.他一定要出席。He insists on it that I go with him.他坚