give one much food for thought; be thought provoking; be intriguing 该国对邻国的导弹计划反应异常强烈，这很～。That country made an unusually strong reaction to its neighbor’s missile program.That was quite revealing.
耐人寻味nài rén xún wèi
耐：禁得起；寻味：仔细体会。意味深长，值得仔细体会。afford food for thought, rich in meaning, intensely interesting, thought-provoking