competitive

有竞争性的，有竞争力的

【例】Please e-mail us an offer at competitive price.

请电邮有竞争性价格的报盘。

competitor

竞争者

【例】Who are our likely competitors in this market?

这个市场上，谁可能是我们的竞争对手？

complain

抱怨，责难

①多接用that从句。

【例】We regret to have to complain that you have not yet delivered the goods ordered a month ago.

一个月前订购的货物，你方尚未交货，我们很抱歉不得不对此提出责难。

②常接用of或about。

【例】Customers have the right to complain about inferior goods and services.

顾客有权对低劣产品和服务提出责难。

③句式：complain to sb of sth。

【例】They complained to us of poor packing.

他们向我们抱怨包装不良。