你好!
爸爸:father
妈妈:mather
姐姐/妹妹:sister
哥哥/弟弟:brother
Father(爸爸) Mother(妈妈) Sister (姐姐/妹妹)Bother(弟弟/哥哥)
father,mother,sister,brother
Father,Mather,older sister,younger sister,younger brother,older brother.
爸爸 father
妈妈 mather
姐姐/妹妹 sister
哥哥/弟弟 brother