- 一对一 yīduìyī one-on-oneone-to-one; one-on-one
- 天生一对 tiānshēngyīduì perfect matcha match made in heaven; a perfect couple
- 天生的一对 tiānshēngdeyīduì perfect matcha couple who were made for each other
- 一对一斗牛 yīduìyīdòuniú one-on-one basketballone-on-one basketball game
- 一一对应 yīyīduìyìng one-to-oneone-to-one correspondence
- 一对儿 yīduìr paira pair; a couple
