one's的意思：某人的；一個人的。one's是one的名詞所有格形式。at(one's)will隨意、It's one's field這是某人的本行、take one at one's word照對方說的做、put one's pride in one's pocket放下架子，謙虛，屈尊，忍辱含垢。

one's例句

One's feelings and instincts are not always a guide to behaviour.

一個人的感情和本能并不總是言行的良好向導。

Turning one's life into a waiting game requires faith and hope,and is strictly for the optimists among us ．

把一個人的生活變成一個等待的游戲需要信念和希望，只有我們之中的樂觀者才做得到。

Up to a third of one's life is now being spent in retirement.

現在人們一生中能有三分之一的時間過退休生活。

Which one's your favourite?

你最喜歡哪一個？

My private affairs are no one's business but my own.

我自己的事自己管，不用其他人操心。