1.discount用作动词的基本意思是“打折”,即从要价中扣除一部分作为立即付款的报酬,引申则指对某人的话或消息“不全信”,甚至“不考虑”。
2.discount作“打折”解用作及物动词时,可接名词或代词作宾语; 作“不全信,不考虑”解时,主要用作及物动词,可接名词作宾语,可用于被动结构。

用作不及物动词
▲S+～(+A)
That store does not discount at all. 那家商店出售商品一概不打折。
用作及物动词
▲S+～+n./pron.
Will you discount 10%?你能打九折吗?
The store discounted all clothing.那家商店打折出售所有的服装。
They still discounted the probability of the use of large rocket.他们仍然低估使用大型火箭的可能性。
They have discounted the rumors.他们不信那些谣传。
In his plans he discounted the expense.在他的计划中他没有考虑到费用。
◇ 用于be ～ed结构
His rich experience isn't to be discounted.他丰富的经验不可小觑。

［同义词］ n. allowance, break, cut, reduction

at a discount
〈正〉不值钱的,不受重视的,不受欢迎的 not valuable or wanted
Honesty seems to be rather at a discount today.如今诚实似乎很吃不开。

I can give you a small discount.我可以给你打点折。
At that shop you can get discount.你在那家商店买东西可以打折。