“贸易额”怎么翻译？

原文：中国连续7年保持俄罗斯第一大贸易伙伴地位。去年，中俄经贸合作克服世界经济不景气、原油等大宗商品价格波动等不利因素影响，实现止跌回升，双边贸易额达到695.3亿美元、同比增长2.2%。今年前5个月，双边贸易进一步提速，增幅达到26%，全年贸易额有望超过800亿美元。

官方译文：China has been Russia's top trading partner for seven consecutive years. Last year, despite such negative factors as the sluggish global economy and prices fluctuations in oil and other commodities, China-Russia economic cooperation started growing again with the trade volume reaching 69.53 billion U.S. dollars, up by 2.2 percent year on year. In the first five months of this year, the two-way trade grew even faster by 26 percent and the total volume in 2017 is expected to exceed 80 billion dollars.

自学笔记：

一大贸易伙伴：top trading partner

连续7年：for seven consecutive years

价格波动：prices fluctuations  [ˌflʌktjʊ'eɪʃəns] 

贸易额：trade volume

同比：year on year