哪位高手能帮我翻译一下这段关于金融方面的英文?小妹不胜感激!!

The purchasing power purchasing (or said PPP) unifies a country currency in the commodity market to in value and the foreign value, thought use similar quantity the currency, exchanges under the balanced exchange rate, all should have the same purchasing power in any country. Looked from the static state and the dynamic angle that, may divide into the purchasing the absolute purchasing and the relative purchasing. “The absolute purchasing” the theory is refers to both countries currency the balanced nominal exchange rate to be equal to but the standard a basket commodity in our country and the foreign ratio of price, pays attention to here is both countries relative price level the non-price index ratio, its foundation is a price law:
= (1) expressed the t time direct costing method nominal exchange rate, with expresses our country and the foreign country separately in the t time general price level. Then the relative purchasing attributes to two national in this section of times price level change exchange rate for a period of time change. It thought the price and the exchange rate can change in maintenance various countries currency home and in the overseas purchasing power invariable situation.

T expression base period, o expresses the standard time. With expressed separately the standard time was opposite in base period our country and the foreign price index, (3) type has manifested between both countries the exchange rate change and the price index relations. Also had reflected if our country inflation rate is higher than foreign relatively the inflation rate, then the exchange rate rise, the standard currency depreciates; If our country inflation rate is lower than foreign relatively the inflation rate, then the exchange rate drops, the standard currency revalues. The relative purchasing has reflected between the exchange rate change percentage and the inflation difference relations correctly.
Two. Price index meaning and in computation relative purchasing significance.
The price index also calls the commodity price index. It may reflect the different time commodity price change directly the degree. The general price index formula is:
Price index =sum (current period /sum (base period represents commodity unit price * weight) on behalf of commodity unit price * weight) the various countries' government to the price level measurement existence difference. Has these difference reason is the life expends the way in the different national people to be different. When in the various countries' commodity basket the different commodity relative price has the change, possibly can cause the relative price fair price to be unable to undergo the different official price index the examination. If the Japanese purchases the sushi is opposite in US are many, when computation price index can give the sushi big weight, has the sweeping change when the sushi price Japan's price changes can be bigger than US's change. (Has not accounted for great weight in US's commodity basket commodity to occur with sushi similar price changes)