1.测锤(钓丝的)坠子;线锤;铅锤线;锤规;重压物
1.笔直掉下;骤然跌落
1.to fall straight down very quickly from a high position
2.if something such as an amount, rate, or value plummets, it suddenly becomes much lower
1.If such a string of incidents had struck a company providing a service in almost any other industry, market share would have plummeted.
如果是一家在几乎其它所有行业中提供服务的公司，如果遭受这一系列事件的冲击，其市场份额会大幅下降。
2.That turned out to be ABC's undoing, as the network eventually plummeted in ratings due to lack of new programming.
节目最终因缺乏创新导致收视率暴跌而被ABC撤销。
3.But this year, she said, her grades have plummeted. All her efforts at creativity, she said, come to "failure, failure, failure. "
不过，她说，今年她的成绩直线下降。她在创意方面的所有努力都沦为“失败、失败，还是失败”。
4.Mining firms' shares, which plummeted in response to the credit crunch, have perked up a lot since the beginning of the year.
曾应信贷萎缩之声而下挫的采矿业公司股票，自年初以来已大幅反弹。
5.But the idea that the company as a whole might be taken over has become significantly more likely as its share price has plummeted.
虽然这个可能性不大，但是整个公司极有可能被接管，因为它的股价暴跌。
6.Officials say the water level that covers the rods plummeted in at least one of the storage pools, forcing them to inject new water.
有关官员说，至少一个废料储存池中覆盖乏燃料棒的水位下降，他们不得不往池子里注水。
7.Even prices, which have plummeted to levels not seen since the beginning of the decade, show evidence of stabilizing.
没有下跌至头十年的水平，这样的价格显示出稳定处理的证据。
8.Citigroup's stock plummeted last week to its lowest level since December 1992, raising doubts about the bank's ability to survive.
上周花旗股价跌至1992年12月以来的最低点，令人担忧该银行能否维持生存。
9.Yet the synchronisation and speed with which exports from countries across the world have plummeted is striking.
但是，世界各国的出口额下降的速度与同步化却让人震惊不已。
10.Federal Reserve Bank. Earlier this week most Asian stock exchanges plummeted on fears that the U. S. credit crisis is far from over.
本星期早些时候，由于担心美国信贷危机远远没有结束，大多数亚洲股市的交易额大幅下滑。