经济发展水平比较接近的国家之间开展贸易活动，称为水平贸易(Horizontal Trade)。例如，北北之间、南南之间以及区域性集团内的国际贸易，一般都是水平贸易。
美国的贸易逆差在第三季度增加到恰好低于300亿美元的水平。
The US trade deficit grew to just under $30 billion in the third quarter.
一个国家的生活水平不仅取决于国内生产和消费的财富，还取决于通过国际贸易间接生产的财富。
A country's standard of living does not only depend upon the wealth that is produced and consumed within its own borders, but also upon what is indirectly produced through international trade.
这项由行业贸易刊物《质量体系法规》委托开展的研究显示，这比行业平均水平多出了约10秒，而且比10年前慢了很多。
That's about ten seconds more than the industry average—and a lot slower than a decade ago, according to the study, which was commissioned by QSR, an industry trade publication.
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