younger sister

基本解释

Before Michelle, Barack had brought only one woman to Hawaii to meet his family, according to his younger half-sister, Maya Soetoro.
巴拉克同父异母的妹妹玛亚·素托罗说，在米歇尔之前，巴拉克带过一个女人回夏威夷见他的父母。
He also does not know the whereabouts of his only sibling - a younger sister.
他也不知道唯一的小妹身在何处。
blog.sina.com.cn
K. Aruna, 19, lives with her widowed mother and younger sister in a two-room house on a narrow, muddy lane in a small village on the outskirts of Bagepalli.
19岁的K·阿鲁娜与守寡的母亲和年幼的妹妹生活在巴吉帕里市郊一个泥泞的小村庄里，她们全家只有一座两居室的狭小房间。

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

Curiously James makes no appearance in an early biography by Joan Evans, his much younger half-sister.
ECONOMIST: Bullshot