Only a brother.

只有一个哥哥。

youdao

Paul's father only saw him as a substitute for his dead brother.

保罗的父亲只是把他当作他死去的哥哥来看待。

《牛津词典》

It turned out that in the bag was a special comic book bought by Timothy's brother. Timothy was only collecting money from Jenna for the comic book.

原来，包里是蒂莫西的哥哥买的一本特别的漫画书。蒂莫西只是从詹娜那里收了漫画书的钱。

youdao

She was named after her father's only brother, who died a few years before she was born.

VOA: special.2009.07.06

And a few years after that, somebody shothis little brother, too, only he wasin a hotel kitchen.

VOA: standard.other

He is not only a dear friend but also a brother in Christ.

WHITEHOUSE: National Prayer Breakfast

There is a walk-in closet filled with shirts and slacks, and one suit, which Hsieh said he shares with a brother and wears only to weddings.

NEWYORKER: Happy Feet

It is a particular gamble if the child is conceived partly to provide a bone marrow graft for a brother or sister with a nasty genetic disease: not only might the new baby turn out be a poor match for transplantation, but might also have inherited the same disorder as his or her sibling.

ECONOMIST: Gene genies