To buy on margin in excess of one's ability to provide further security if prices drop.

超出能力地买股票过度购买，如果一旦价格下跌，无力增添保证金。

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Buying Power Amount of money available in a margin account to buy securities based on excess margin divided by the margin requirement.

购买力保证金账户中超过利差要求，可以买入证券的那部分超额保证金。

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Speculators were allowed to buy shares on margin and could even borrow from the company to do so.

公司允许投机者差价购股，投机者甚至可以从该公司借钱来购买该公司的股票。

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When interest rates were high and stocks were bumping the bottom back in 1982, he encouraged all his clients, including David and Wilma Wilson, to buy on margin.

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We also have something which is self-managed, which is if you don't want us to do it, or you have opinions, this really started out as a benevolent brokerage firm, was my concept, where I sort of say you can't buy on margin, you have to buy at least 20 or 30 stocks, but you can only pick from this pre-approved list: companies that rank high as cheap and good.

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Credit also was used to buy stocks on margin, greatly increasing the market's volume and volatility.

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