Examples
他们俩在同一个年龄。
They are the same age.
Source: Tatoeba
汤姆和我在同一个班裡。
Tom and I are in the same class.
Source: Tatoeba
他们俩爱上了同一个女的。
They both fell in love with the same woman.
Source: Tatoeba
汤姆和玛丽在同一个班级。
Tom and Mary are in the same class.
Source: Tatoeba
汤姆和我生在同一个城市。
Tom and I were born in the same city.
Source: Tatoeba