An elder brother, a younger sister, an elder sister.

一个哥哥，一个妹妹，一个姐姐。

youdao

I have one older sister, one younger sister and one younger brother.

我有一个姐姐、一个妹妹、一个弟弟。

youdao

My elder sister is the center of my life. I never find the absence of love, friendship or guardian till I am with my sister.

我的姐姐是我生活的中心。和姐姐在一起为止，我从来没有缺少过爱情、友情和保护。

youdao

This week,Kim Jong Un and his aunt, the sister of Kim Jong Il, became four-star generals with little military experience.

VOA: special.2010.10.02

You remember they're wandering around the forest without her picking berries. The younger brother, - the second brother, is most concerned about his sister's safety -- so I want you to look at this passage.

你们记得他们在树林中游荡,没有拿他们采摘的果子，小哥哥，也就是二哥哥，是最关心他妹妹安全的-,所以我想让你们看这篇文章。

耶鲁公开课 - 弥尔顿课程节选

Yeats's elegy here recalls her youth and that of her sister, both friends of the younger Yeats: Eva Gore-Booth a youth spent in the Sligo mansion, Lissadell, where Yeats visited in 1894.

叶芝的挽歌回忆她的少年,还有她妹妹，伊娃戈尔。布斯，她们都是叶芝少时朋友,这一年少时期是指1894年叶芝，在里萨德尔的斯莱格庄园。

耶鲁公开课 - 现代诗歌课程节选

During New Year's Eve, everybody is sitting in pairs, your brother with your sister-in-law, your sister with your brother-in-law etc.

BBC: Q&A: Chinese dating consultant Zhou Xiaopeng

"Obviously he (Mohammed) is in a traumatic state by losing the entire members of his family - his mother, his father, his brother, sister-in-law and his beloved sister he's lost as well, " said Mr Shazada.

BBC: Mohammed Eisa Daniel

Lovela Nicolas, the sister-in-law of Fojas' sister, said Fojas was a registered nurse.

CNN: Bride, 4 friends die in bachelorette limo