pigeonholes
n. 信函分拣台格架，分拣台（pigeonhole 复数）
v. 把……归类；把……留在记忆中（pigeonhole 的第三人称单数形式）
例句
Imagine that 3 pigeons need to be placed into 2 pigeonholes.
设想要将3只鸽子装进2个鸽子洞里。
Amazingly, all the results come out of a basic insight from stuffing pigeons into pigeonholes.
让人感觉不可思议的是，结果都产生于对将鸽子塞入鸽子洞现象的基本理解。
While this version sounds different, it is mathematically the same as the one stated with pigeons and pigeonholes.
这一版本听起来（与前一版本）不同，但从数学意义上来说，是一致的。
