- GeoffreyLv 71 0 年前最佳解答
A half sibling (half brother or half sister) is a sibling with one shared biological parent. A half sibling that shares the same mother(but different fathers) is known as a uterine sibling, whereas one that shares the same father is known as an agnate sibling.=>
- 1 0 年前
step brother or step sister common usage.