求翻译：澳联邦储备银行通过大量增加公开市场流动性、增加回购品种、扩大回购抵押品范围、牵头与国内其它金融监管当局签署并发布《关于金融危机管理的谅解备忘录》，是什么意思？

Federal Reserve Bank of Australia open market by a significant increase in liquidity and increase buy-back variety, to expand the scope of repo collateral, lead and other domestic financial supervisory authorities signed and released the "memorandum of understanding of financial crisis management."

o Federal Reserve Bank through a substantial increase of open market repurchase varieties, mobility, increasing range of collateral against expansion of buy, lead and other domestic financial regulatory authorities signed and issued on the financial crisis management, the memorandum of understanding

Australia Federal Resere Bank through the massive increase open market fluidity, increases buys the variety, expands buys the collateral scope, the coordination and the domestic other financial supervising and managing authority signs and issued "Memorandum Which Manages about Financial crisis",

Federal Reserve Bank of Australia by a significant increase in market liquidity, increase buy-in public, expanding the scope of repo collateral, lead and other domestic financial regulators sign and publish the memorandum of understanding on crisis management,

Federal Reserve Bank of Australia by a significant increase in market liquidity, increase buy-in public, expanding the scope of repo collateral, lead and other domestic financial regulators sign and publish the memorandum of understanding on crisis management,