信用评级机构Moody’s表示，他们评定的反映已负债累累的美国公司现金状况的流动资金状态指数显示：目前这些公司正处于自2002年底以来从未遭遇的艰难境地。

Moody’s, a credit-rating agency, says its liquidity-stress index, which tracks the cash position of heavily indebted American firms, shows they are feeling as pinched as at any time since late 2002.

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另外，交易所指数基金能提供每日的价格和流动性，允许投资者迅速退出和改变他们的市场地位而不遭受因卖出来受到的严重损失。

In addition, ETFs can provide daily pricing and liquidity, allowing investors to exit quickly and change their market position without incurring heavy discounts on selling the product.

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莱登说，有一些构建良好的中国相关指数，代表这类指数的交易所买卖基金具有多样化、低费用和流动性的特点。

'There are some well-constructed China-related indexes,' Lydon said. 'the ETFs that represent them have diversification, low expenses and liquidity.'

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