The index has tumbled 15 % since march 9 .

自3月9日以来，该指数下跌了15%。

Stocks of some of these firms have tumbled this year .

今年以来部分这类企业的股价急速下跌。

No wonder bond prices have tumbled , sending yields much higher .

难怪债券的价格已经大幅下跌，导致收益率大大提高。

Retail trade employment growth also tumbled , as nervous consumers trimmed spending .

因为紧张的消费者消减支出，零售业就业增长率也下跌。

Within weeks , merrill had reported $ 15 billion of losses and bofa shares had tumbled .

数周之内，美林公布了150亿美元的损失，美国银行股价暴跌。