1) I am three years her junior.

我比她小三岁。
2) She is my junior by three years.

她比我小三岁。
3) She is three years older than me.

她比我大三岁。
4) He is three years her junior/her junior by three years

他比她小三岁.
5) I am three years younger than Bob.

我比鲍勃小三岁。
6) He is three years junior to me.

他比我小三岁。
参考词条