That may require new tools: the gw gold Federal Reserve would gain from being able to issue bonds that could mop up liquidity.

这或许将要求央行拿出新的政策工具：如美联储就将从能发行吸收流动性的债券中获益。

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The snag is that sterilisation is expensive because the RBI has to pay much more on the bonds it issues to mop up liquidity than it earns on dollar reserves.

问题是这种遏制代价昂贵，印度储备银行RBI为消除流通增长而发行的有价债券，其利息远大于美元储备的收入。

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The second rationale has some merit provided the Bank of Japan really does resist the urge to mop up any liquidity.

第二个基本原理倒是给日本银行提供了一些好处，真正的阻止了冲销任何流动资金的匆忙。

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Talking at China's Business Summit, China's Vice Premier Zeng Peiyan said China would adjust its money supply and credit and take "comprehensive measures to mop up liquidity in the banking system".

BBC: NEWS | Business | China trade surplus at new high

These then morphed into "banks for bankers" - clearing houses which would mop up liquidity among the middle and upper classes and spread it through the private banking system (in the lobby of the Bank of England there is a nice painting of the English bourgeoisie queuing up at Threadneedle Street on Dividend Day by George Elgar Hicks).

BBC: Central banks are part of the state

The central bank issues bills to mop up the liquidity created from buying reserves, which obliging banks hold at low rates.

ECONOMIST: Currencies