亲兄弟 qīnxiōngdì biological brothers Origin Definitions Defs Strokes Stroke Words Sentences Sents 2 sentences 他把我当成他的亲兄弟。 tā bǎ wǒ dàngchéng tā de qīnxiōngdì. He treats me like his own brother. Source: Dong Chinese Dictionary我们不是亲兄弟。 wǒmen bù shì qīnxiōngdì. We're not brothers. Source: OpenSubtitles