[] to reduce the amount or value of sth in a sudden or extreme way（某物的数量或价值）急剧下降◆Shares have been hammered by the recent news.股价因最近的新闻而急剧下跌。◆The cold weather hammered ice cream sales.寒冷的天气使冰淇淋的销售额急剧下降。●ˌhammer aˈway at sthto keep working on sth or emphasizing sth努力做某事◆People will continue to hammer away at this issue.人们将继续努力解决这个问题。●ˌhammer sth ˈdownto reduce prices, costs, etc. by a large amount使（价格、成本等）大幅度下降◆All our goods are at hammered-down prices.我们所有的商品都大幅削价销售。●ˌhammer sth ˈoutto discuss a plan or a deal until all the details are agreed清楚确定◆Final details have yet to be hammered out.最终的细节还没有清楚确定。