He's my sworn brother.

他是我的结拜兄弟。

He is my sworn brother.

他是我的结拜兄弟。

According to an early tradition became his sworn brother.

根据一条过去的传统，他成为他的结拜兄弟。

OLD CHEN--- In his thirties. A deserter. Old Lin's sworn brother.

老陈——男。三十岁。逃兵。老林的把弟。

Thinking in this way, he pushed his sworn brother into a mountain torrent.

这麽样子，于是乎他就把这个结拜的兄弟，推到山涧里头去了。