求翻译：据中国海关统计，2009年上半年，双边贸易额153.3亿美元，同比下降16%，我出口93.4亿美元，进口59.9亿美元，分别同比下降16.6%和15.2%，中方顺差33.5亿美元。是什么意思？

According to Chinese customs statistics, in the first half of 2009, bilateral trade volume is $ 15.33 billion, down 16 percent, exports $ 9.34 billion, imports $ 5.99 billion, down 16.6 percent and 15.2 percent respectively, China had a surplus of $ 3.35 billion.

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According to the Chinese Customs statistics, in 2009 the first half year, bilateral volume of trade 15,330,000,000 US dollars, the same ratio drops 16%, I export 9,340,000,000 US dollars, imports 5,990,000,000 US dollars, distinguishes the same ratio to drop 16.6% and 15.2%, Chinese government favor

According to Chinese customs statistics, the first half of 2009, $ 15.33 billion in bilateral trade, down 16%, I exported US $ 9.34 billion, imports amounted to $ 5.99 billion, fell and 16.6% respectively, the Chinese surplus US $ 3.35 billion.