vt.[证券]从事投机使（证券等）价格上涨（bull的过去式与过去分词形式）； 双语释义：n.(名词)[C]公牛; 雄兽 that adult male form of cattle, supposed to be fierce and hard to control, kept on farms to be the parent of young cattle[C]买进证券投机图利者,(对股市行情)看涨的人 a person who buys business shares or goods in ex