back

【1】前欠的

【例】Owing to many back orders in hand at present, we find it difficult to ship yours in August, as requested.

由于目前手头有很多订单等待交货，你方订单很难按照要求于8月份交货。,

【2】倒退

①back down放弃要求，让步

【例】 After we had talked with them, they backed down from their previous position regarding price.

在我们同他们商谈之后，他们在价格上有所让步。

②back out (of, from)食言，不履行（合同等）

【例】 Their London Office agreed to the proposal and then backed out.

他们伦敦公司同意了这个建议，然后又后悔了。

backdate

回溯

常接用介词to。

【例】The increase in pay agreed in December will be backdated to October.

12月份同意增加的工资要从10月份算起。

background

经历，历史

【例】The firm in question is an importer and wholesaler here of electrical machinery, having a business background of some 20 years.

你方所查询的商号是本地电力机械的进口批发商，已有20年左右的历史。