Bull 与 Bear
在股票市场，牛市 （bull market） 是上涨的行情，熊市 （bear market） 是下跌的行情。 stockbroker 是指股票投资者。 sell the bear's skin before he had caught the bear 指卖空 （buy short） ，在俚语中， sell a bear 也同样指卖空。
另外，在股市以外，牛和熊也有含义：英国人自称为约翰牛 （John Bull） ，美国男篮也有大名鼎鼎的芝加哥公牛队 （Chicago Bulls） . bull 指粗壮的人；卤莽的人；凶猛的人， a bull in a china shop 指说话或行动卤莽的人；笨手笨脚动辄闯祸的人。 shoot the bull 指吹牛皮， a bear for hard work 指能吃苦耐劳的人。
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