兄妹英语单词怎么写

His mother, brother and sister took turns to walk or drive together with him.
他的母亲、兄弟姐妹轮流和他一起散步或开车。
My older brother and sister used to torment me by singing it to me.
哥哥姐姐以前常唱那首歌来戏弄我。
Such a contrast between brother and sister is surprising.
兄妹之间如此之大的差别令人惊讶。