one-on-one
adjective [ before noun ] uk/ˌwʌn.ɒnˈwʌn/ us/ˌwʌn.ɑːnˈwʌn/
(UK also one-to-one)（通常指一人教另一人或给予另一人信息）一对一的
A one-on-one activity involves two people talking directly, usually with one teaching or giving information to the other.
Each employee has a one-on-one performance review with his or her boss. 每一个雇员都会与其上司做一对一的业绩回顾。
one-on-one
adverb uk/ˌwʌn.ɒnˈwʌn/ us/ˌwʌn.ɑːnˈwʌn/
(UK also one-to-one)（仅在两人之间的）一对一地
If two people discuss something one-on-one, they discuss it directly, without involving anyone else.
It's best to talk with him about the problem one-on-one. 最好是和他一对一地谈一些这些问题。
US（运动中）一对一
In sports, if something is done one-on-one, it means that each player from one team is matched to a single player from the other team.
one-on-one
noun [ C ] uk/ˌwʌn.ɒnˈwʌn/ us/ˌwʌn.ɑːnˈwʌn/ one-on-ones
(UK one-to-one)（仅在两人之间的）一对一谈话（或会议）
a discussion or meeting between two people, without anyone else involved
As well as general meetings, the president had one-on-ones with the other leaders. 在大会之外，总统还和其他领导人举行了一对一的会谈。