1. 姐;妹
Your sister is a girl or woman who has the same parents as you.
e.g. His sister Sarah helped him.
他姐姐萨拉帮助了他。
e.g. ...Vanessa Bell, the sister of Virginia Woolf...
弗吉尼娅·伍尔夫的姐姐瓦妮莎·贝尔
Note that there is no common English word that can refer to both a brother and a sister. You simply have to use both words. She has 13 brothers and sisters. The word sibling exists, but it is very formal.
注意英语中没有统称兄弟姐妹的常用词，所以在谈及兄弟姐妹的时侯，必须同时使用 brother 和 sister：She has 13 brothers and sisters (她有 13 个兄弟姐妹)。sibling 可以统称兄弟姐妹，但非常正式。
sister 基本解释
sister 反义词
名词brother
