求翻译：2010年，中国对外投资额达67.8亿美元，积累出境投资总额超过$ 300亿美元。也有许多图表，以证明中国加入WTO后的贸易和经济形势。是什么意思？

In 2010, China's foreign investment reached $ 6.78 billion, leaving a total investment accumulated more than $ 30 billion. There are also many diagrams to show China's accession to WTO, trade and economic situation.

In 2010, China's foreign investment reached $6.78 billion, accumulating exit total investment of over $30 billion US dollars. There are also many WTO charts in order to prove that China's accession to the trade and economic situation.

In 2010, the Chinese foreign investment cost amounts to 6,780,000,000 US dollars, the accumulation leaves country the total investment to surpass $ 30,000,000,000 US dollars.Also some many graphs, after proved China joins WTO the trade and the economic situation.

In 2010, China's foreign investment reached US $ 6.78 billion, accumulated outbound investment totalling more than US $ $300 billion. There are also many charts to prove that after China joins the WTO trade and economic situation.

In 2010, China's foreign capital cost is up to 6,780 million dollars, accumulate and leave the country the total investment exceeds 30 billion dollars of $s. There are a lot of charts too, in order to trade and economic situation after proving the accession to the WTO of China.