Currency-conversion costs remain one of the biggest obstacles to cross-border trade.

货币兑换成本仍是跨境贸易的最大障碍之一。

《柯林斯英汉双解大词典》

You have three main trade routes that cross the country.

你有三条主要贸易路线穿过这个国家。

youdao

Men sailed the seas as pirates when countries began to cross the Oceans and seas to trade goods with each other.

当不同国家之间跨越海洋，互相交易货物时，有些人们在海上却开始了他们的海盗生涯。

youdao

Last year,U.S.-Mexico cross-border trade amounted to $293 billion.

VOA: standard.2009.04.30

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

The regional Interpol office is also focusing on increasing piracy in the Gulf of Guinea, illegal drug trafficking, arms smuggling, cross-border highway banditry, computer-based crimes, and the poaching and trade of protected animals.

VOA: standard.2009.11.09

Laws and their consistent enforcement are the basis for free and successful cross border trade.

FORBES: Investing In China Is Fraught With Business Landmines

Foreign currency flowed into North Korea in a number of ways including cross border trade with China and visiting foreigners, he said.

CNN: How does North Korea make its money?

Most of them are trying to get a piece of the billions of dollars in cross border trade between Turkey and Kurdish-controlled northern Iraq.

NPR: Turkey Threatens Economic Sanctions on Kurds