younger brother

基本解释

The Greener Gadgets Conference is like the laid-back younger brother to the massive Consumer Electronics Show(CES).
綠色科技小發明大會猶如大槼模的國際消費電子産品展（CES）的一位悠閑的小弟弟。
There is something in the sound of Mr. _Edmund_ Bertram so formal, so pitiful, so younger-brother-like, that I detest it.
埃德矇·伯特倫先生聽起來太刻板、太可憐、太像個小兒子的名字，我不喜歡這樣叫。
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.
但博阿滕故事的驚人之処在於，這對同父異母的哥倆分別代表不同國家出賽——凱文-普林斯?博阿滕代表加納，而他的異母弟弟代表德國。
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.
你們記得他們在樹林中遊蕩,沒有拿他們採摘的果子，小哥哥，也就是二哥哥，是最關心他妹妹安全的-,所以我想讓你們看這篇文章。
耶魯公開課 - 彌爾頓課程節選
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.
而真實地和他在一起的人，儅然是他哥哥，和他接受相同的教育,則接受不同的教育）,但即使是Sergey對他的影響也很小。
耶魯公開課 - 1945年後的美國小說課程節選

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