解释下词组在句子中的意思,外贸英语,

解释下词组在句子中的意思,外贸英语,
259.The sugar of French-made has been sold at level 98$ per long ton ,if you can reduce your
limit by say 8% we might come to terms.
法国产的粮已经卖到每长吨98美金,如果你能降价8%,我们可能会成交
by say在句中是什么意思?
272.A discount of 5% maybe allowed if the quantity for each specification is more than 1000
cents.
若每一规格的数量超过1000分的话,5%的折扣可能被允许
cents
281.If you are willing to buy the whole lot once and for all ,we can grant you a discount of 8%
on the price.
若你能一次买一整套或更多,我们同意在价格上给你8%的折扣
whole lot
310.As a special accommodation we are agree to your D/P payment terms, but only for once.
作为一个特例,我们同意你方的D/P付款条件,但仅有一次
special accommodation金山词典翻译是特殊照顾,这里怎么解释是特例
312.We wish to order from you your products as pro-ov purchase.
我们希望就贵司的产品作为正式采购向贵司下订单
pro-ov
320.We’d like to place a order with you for 1000 cases each of No77 and 100 at 5$ and 6$
/Case FOB Shanghai.
我们将向你订购编号77和100各1000件,单价分别为5美金和6美金,FOB上海
Case
323.This is our official trial order for 500 computers.
这是我们500台计算的正式订单
official trial order哪个是词组,是official trial还是trial order