shǔ wǎng zhī lái
数:计算;往:过去;来:未来。明了过去,可以推知未来。
《周易 说卦》:“数往者顺,知来者逆。”
数往知来联合式;作谓语、定语;指知道前事,可以推知未来。
deduce what likely to happen in the future by reviewing what has taken place in the past