China's yuan strengthens to 6.3997 against USD Monday
时间：2011-08-22 06:46:57
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（单词翻译）
BEIJING, Aug. 22 (Xinhua) -- The Chinese currency Renminbi, or the yuan, strengthens 35 basis points to 6.3997 per U.S. dollar on Monday, according to the China Foreign Exchange Trading system.
In China's foreign exchange spot market, the yuan is allowed to rise or fall by 0.5 percent from the central
parity1 rate each trading day.
The central parity rate of the yuan against the U.S. dollar is based on a weighted average of prices before the opening of the market each business day.
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