英语翻译央行从2008年12月25日起到2011年6月20日期间进行了13次上调存款准备金率.并在2011年6月20日达

央行从2008年12月25日起到2011年6月20日期间进行了13次上调存款准备金率.并在2011年6月20日达到了最高点21.5%.其目的旨在抑制通货膨胀率,减少现金流的流动,和减少贸易顺差.以减少经济的增长过快而带来的过热.
Started from December 25,2008 to June 20,2011,the central bank had raised the deposit-reserve ratio 13 times,which had reached the peak of 21.5% on June 20,2011,its main aim was to tackle the inflation,reducing the amount of liquidity and the trade surplus,then it would reduce the speed of excesssive fast growth and prevent the economy from overheating.
对开发商和建造商的负面影响：
The negative effects on the developers and constructors:
（1）央行在缩减”银根”的同时也会缩减“地根”,将会导致开发商无法买到更多的土地,而银行利息率的上涨,将会增加开发商囤地所耗费的成本,从而减缓开发商开发房地产的速度.
At the same time of tightening the monetary policy,the central bank had also tightened its land policy too,which would lead to developers not be able to buy more lands and the increase of bank interest rates would also increase cost on the developers reserved lands.Eventually,it would slow down the speed of the developers' property developments.
（2）央行在上调存款准备金率的同时也会上调存款利息率,这将影响人们是否会进行高风险投资（譬如房地产）,而是将更多的钱存在银行,在一定程度上会减少对住房的需求.
At the same time of increasing the deposit-reserve ratio,the central bank also would raise the interest rates.This will affect higher risk investment intentions of the people.There will be more money deposited into the banks and would reduce the demands for housing.
（3）对于长远来说,开发商会选择降价或者促销来提高住房的销量,以减少商品房的囤积,因为当银行一旦切断开发商的资金链,将会减少开发商手中的资金,开发商为了加快其资金的回笼,只能通过改变其销售策略.
For the long term,the developers will choose price reductions to boost their property sales,reducing the amount of their property stockpiling.Because once when the bank has cut off the developers capital chains,which would reduce their cash in hand too.In order to recoup their capital quicker,the developers can only change their sales strategy.
这是最後一道,已全部完成.