证券公司是我国投资银行体系中的主体，其业务主要是从事证券发行承销和二级市场交易业务。
The securities firms is a subject in the system of investment banks of our country, their business is mainly engaged in securities issue and second marketing .
证券公司是我国投资银行体系中的主体，其业务主要是从事证券发行承销和二级市场交易业务。
The securities firms is a subject in the system of investment banks of our country, their business is mainly engaged in securities issue and second marketing .
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