上一講中我們?yōu)槟榻B了 floating exchange rates 和 fixed exchange rates，浮動(dòng)匯率與固定匯率。澳廣金融節(jié)目主持人巴里克拉克介紹說(shuō)，二十世紀(jì)的固定匯率制不僅未能保持匯率的穩(wěn)定，而且還為投機(jī)者提供了機(jī)會(huì)。
     但是實(shí)行浮動(dòng)匯率制也同樣有它的不利之處。不斷變化的匯率為工商業(yè)的運(yùn)作帶來(lái)許多不確定因素。
     不過(guò)，澳洲廣播電臺(tái)金融節(jié)目主持人巴里克拉克繼續(xù)介紹說(shuō)，各國(guó)的中央銀行或儲(chǔ)備銀行大都會(huì)在關(guān)鍵時(shí)刻對(duì)市場(chǎng)進(jìn)行干預(yù)，以減緩貨幣匯率的劇烈動(dòng)蕩。
     巴里克拉克在他的講話中提到了這樣一些詞匯：
     1 reserve bank 儲(chǔ)備銀行2 cushion 緩沖墊，減震器3 intervene 干預(yù)4 contention 辯論5 on balance 總的來(lái)說(shuō)6overshooting 過(guò)火，過(guò)激
     下面我們聽一遍巴里克拉克的談話及中文翻譯：
     the reserve bank tries to play a role in providing a comfort cushion by intervening from time to time in the foreign exchange market with a view to limiting its more extreme fluctuations.
     whether the central bank should be doing this, and whether it actually can influence exchange rates in the face of market forces, are matters of some contention.
     from its own analysis, the reserve bank is persuaded that, on balance, it plays a useful role in limiting overshooting in the market