(not used in the form firmer, firmest 不用 firmer、firmest 的形式) that cannot be changed after it has been decided or agreed不能更改的；确定的；不可撤销的◆The airline has placed firm orders for 10 new planes.这家航空公司已确认订购 10 架新飞机。◆We need a firm date for delivery.我们需要知道交货的确切日期。⨁a firm bid / date / offer / order递实盘；确定的日期；实盘；确认的订单 ⨁ a firm agreement / commitment / decision / promise不能撤销的协议／承诺；不可更改的决定；坚决的保证 (firmer, firmest) at a good or high price or level; steady（价格）坚挺的，稳定的◆The pound remained firm against (= compared to) the dollar.英镑兑美元保持坚挺。◆Shares in oil companies were firmer.石油公司的股价较为稳定。 OPP soft