单词	Colorado pikeminnow
释义	Colorado pikeminnow noun : a large dull olive green pikeminnow (Ptychocheilus lucius) that was formerly present in most of the Colorado River and its tributaries but is now restricted mainly to its northern range and that may reach a length of six feet (1.8 meters) Word History First Known Use 1998, in the meaning defined above
随便看	keep someone guessing keep someone in her place keep someone in his place keep someone in the picture keep someone on her toes keep someone on his toes keep someone or something at arm's length keep someone or something back keep someone or something going keep someone posted keep someone sweet keep something close to one's chest keep something close to the vest keep something under one's hat keep something up one's sleeve keep step keep tabs on keep the ball rolling keep the faith keep the wolf from the door keep things in proportion keep time keep to keep to oneself keep track

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