to discuss something step by step with someone
与某人一步一步地讨论某事 (yǔ mǒu rén yī bù yī bù de tǎo lùn mǒu shì)
"Let's talk through with the client before we give our recommendation."
"在我们给出建议之前,先与客户讨论一下。" (zài wǒmen gěi chū jiànyì zhīqián, xiān yǔ kèhù tǎo lùn yīxià)