"Day trading" is a new expression about a system that lets investors trade directly on an electronic market system. The system is known as NASDAQ, short for The National Association of Securities Dealers Automated Quotation. It was the first completely computerized stock market. It sells stocks of companies not listed on any stock exchange. Many high technology companies are listed on it. ____________________Day trading(日交易)是关于使投资者通过电子交易系统直接交易的新短语.该系统是纳斯达克,美国全国证券交易商协会的缩写,是首个完全电子化的股票市场,出售的股票不仅仅是任何股票交易所上市的公司,许多高科技公司也名列其中.___________________