可以把这种对应看作是各负责另一人之安全的两人同行制，每一个自然数都与某个正分数配对，反之亦然。

You could think of this correspondence as a buddy system in which each natural number is paired with some positive fraction, and vice versa.

youdao

可以把这种对应看作是各负责另一人之安全的两人同行制，每一个自然数都与某个正分数配对，反之亦然。

You could think of this correspondence as a buddy system in which each natural number is paired with some positive fraction, and vice versa.

youdao