created sense approved 九九归一/九九歸一 · jiǔjiǔguīyī · abacus rule
九九归一 / 九九歸一
jiǔjiǔguīyī
abacus rule
the calculation rule on an abacus where nine divided by nine equals one
“九九归一”原是珠算的一句口诀。
time word
created sense approved 九九归一/九九歸一 · jiǔjiǔguīyī · ultimately
九九归一 / 九九歸一
jiǔjiǔguīyī
ultimately
when all is said and done; in the final analysis; returning to the basics
这些复杂的方案九九归一，还是为了提高效率。