商量(shāng liáng) - to discuss, to talk over in Mandarin

商量 (shāng liáng) is discussing something with a view to settling it. Two or more people put their heads together and come out with a decision, which is why it collocates so happily with 一下 and with 以后.

It differs from 讨论 in temperature. 讨论 is a seminar or a committee working through a topic; 商量 is you and your partner deciding which flat to take. It also carries a strong note of negotiability, so 还可以商量 is exactly how a seller signals that the price is not final.

Two things trip English speakers up. The second syllable is often reduced in speech to a neutral tone, so you will hear shāng liang; and the person you are consulting takes 和 or 跟, never a bare object. Say 我和他商量 or 我跟他商量, not 我商量他.