Security documents (fixed at 20833) represent the majority of US-traded stocks and mutual funds and use actual security symbols and names.

证券文档(20833个)使用实际的证券符号和名称，表示在美国交易的大多数股票和共同基金。

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Although most managers of mutual funds bear security-selecting ability, there is little evidence to justify that these managers abound in timing ability.

没有足够的证据说明我国的基金经理有市场择时能力，但是多数基金经理具有证券选择能力。

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Although most managers of mutual funds bear security-selecting ability, there is little evidence to justify that these managers abound in timing ability.

没有足够的证据说明我国的基金经理有市场择时能力，但是多数基金经理具有证券选择能力。

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