younger brother

基本解释

The Greener Gadgets Conference is like the laid-back younger brother to the massive Consumer Electronics Show(CES).
绿色科技小发明大会犹如大规模的国际消费电子产品展（CES）的一位悠闲的小弟弟。
There is something in the sound of Mr. _Edmund_ Bertram so formal, so pitiful, so younger-brother-like, that I detest it.
埃德蒙·伯特伦先生听起来太刻板、太可怜、太像个小儿子的名字，我不喜欢这样叫。
What was so striking about the Boatengs is that these men, born of the same father, played for different countries – Kevin-Prince for Ghana and his younger, half-brother for Germany.
但博阿滕故事的惊人之处在于，这对同父异母的哥俩分别代表不同国家出赛——凯文-普林斯?博阿滕代表加纳，而他的异母弟弟代表德国。
dslideshan.blog.163.com

So he appointed a new publisher -- his younger brother Benjamin.
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
Sergey The real people he was, sort of, with--certainly his brother, Sergey, Sergey way and were somewhat younger than him) -even Sergey is sort of invisible to him.
而真实地和他在一起的人，当然是他哥哥，和他接受相同的教育,则接受不同的教育）,但即使是Sergey对他的影响也很小。
耶鲁公开课 - 1945年后的美国小说课程节选

Kim Jong-nam's fall from favor leaves his younger half-brother, Kim Jong-Chul, as the front-runner.
CENTERFORSECURITYPOLICY: The House of Kim