Trade frictions between the two countries had been caused by trade protectionists.

两国间的贸易摩擦是由贸易保护主义者引起的。

《柯林斯英汉双解大词典》

Alicia was a jeweler by trade.

艾丽西亚是个珠宝商。

《柯林斯英汉双解大词典》

He was a carpenter by trade.

他以木工为业。

《牛津词典》

This wet air is then carried by trade winds to the normally rainy areas of the western Pacific, near the Equator.

VOA: special.2009.09.29

50 billion of that accounted by a trade and balance with China alone What do you do with those data?

其中单与中国的就高达2，500亿美元,你们怎么看待这些数据？

斯坦福公开课 - 经济学课程节选

So you have three main trade routes that cross the country, and they were used by trading caravans that would carry gold and grain and spices and textiles and other goods between Egypt and the rest of the Fertile Crescent and up into Asia Minor.

你有三条主要道路穿过这个国家，他们被通商的车队所使用,驮着金子，谷物，香料，纺织品和其他货物,在埃及与其他肥沃的伊斯兰教国家间,向上到达小亚细亚。

耶鲁公开课 - 旧约导论课程节选

Fravel, a lawyer by trade, has been in the horse racing business for 21 years.

FORBES: After The Breeders' Cup, A Question Worth Asking: Is The Sport Of Horse Racing Really Dying?

Even Mr Blair's half-hearted reforms have been condemned as vandalism by trade union reactionaries.

BBC: NEWS | UK | Politics | Text of Michael Howard's speech

So it's a border zone dominated by trade and commerce, much of it illegal.

NPR: Moroccan Village Funnels Suicide Bombers to Iraq