shǔ wǎng zhī lái
数往知来
词语解释
数往知来 [shǔ wǎng zhī lái]
1 追溯过去，可以预测未来。
英 deduce what likely to happen in the future by reviewing what has taken place in the past; know the future by thinking of the past;
引证解释
1 谓知道了前事，就可以推测未来。