market making

• 证券市场为调整供求或价格而进行的买卖

market making的用法和样例：

例句

1. His clever manipulation of the stock market make him lots of money.
   他在股票交易中买卖精明，赚了很多钱。
2. His clever manipulation of the stock markets makes him lots of money.
   他在股票交易中买卖精明，赚了很多钱。