arm in armglossary / ARM-IN-ARM arm-in-arm, adj. Of, relating to, or involving a transaction between parties whose personal interests are involved. Cf. ARM’S-LENGTH. 词条贡献者 法律翻译Roger,在一家顶尖欧洲律师事务所的北京办公室担任全职法律翻译,专注翻译各类与北欧业务有关的法律文件。