1N-UNCOUNT (私下的）讨价还价，交易 If you describe discussions or negotiations as horse-trading, you disapprove of them because they are unofficial and involve compromises. (私下的）讨价还价，交易 [British, mainly journalism, disapproval]
...the anger and distaste many people feel at the political horse-trading involved in forming a government.
很多人对政府组阁过程中的政治交易所感到的气愤和反感
2N-UNCOUNT 精明的交易 When negotiation or bargaining is forceful and shows clever and careful judgment, you can describe it as horse-trading . 精明的交易 [US]