Shares were trading at under half their usual value.
那些股份以低于通常价值的一半买卖。
《牛津词典》
2
The shares have halved in value.
股价已经跌了一半。
《牛津词典》
3
The value of listed shares in American firms collapsed by 57% from its peak in October 2007 to a low in March this year, though it has since rebounded somewhat.