song of divination卜: divination; fortune-telling算子: operator卜算未来: the future算子: operator 微分算子 differential operator逆算子, 反算子: inverse operator下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:卜算子,即可在微信中查询翻译