1 fair trade 英文:

 a way of buying and selling products that makes certain that the people who produce the goods receive a fair price.

中文：（确保制造商获得合理价格的）

互惠贸易

 The charity says that fair trade brings a better standard of living for poor farmers in developing countries.

这家慈善机构表示，互惠贸易为发展中国家的贫苦农民提高了生活水平。

 

 2 exchange words 英文:

 

to speak with someone 中文：交谈；对话

 

We exchanged words after the meeting.

我们会后进行了交谈。

 

 3 stop off somewhere 英文:

 to visit or stay at a place for a short time when you are going somewhere else.

中文：中途拜访，中途停留（在某处）

 

We're going to stop off in Denver for a couple of days before heading south.

 我们去南方之前要在丹佛停留几天。

 

4 tell against sb/sth 英文:

 to make someone or something more likely to fail. 中文：对…不利

His reputation as a troublemaker told against him when he tried to change his job.

他惹是生非的坏名声对他换工作不利。

 

5 keep to sth 英文：

to do what you have promised or planned to do.

中文：遵守，信守（诺言）；坚持（计划）

 

 I think we should keep to our original plan.

我想我们应当坚持原计划。