一句话一个克林斯字典基本单词B

161、bone        
    Your bones are the hard parts inside your body which together form your skeleton.
   

162、bone up on            
            If you bone up on a subject, you try to find out about it or remind yourself of what you have already learned about it. (INFORMAL)
       .

163、book        

    A book is a number of pieces of paper, usually with words printed on them, which are fastened together and fixed inside a cover of stronger paper or cardboard. Books contain information, stories, or poetry, for example.
   

164、book in, book into              
        When you book into a hotel or when you book in, you officially state that you have arrived to stay there, usually by signing your name in a register. (BRIT; in AM use check into or check in)
      

165、boom        
        If there is a boom in the economy, there is an increase in economic activity, for example in the amount of things that are being bought and sold.
    

166、boost        
        If one thing boosts another, it causes it to increase, improve, or be more successful.
   

167、boot        
    Boots are shoes that cover your whole foot and the lower part of your leg.
   

168、boot out            
        If someone boots you out of a job, organization, or place, you are forced to leave it. (INFORMAL)
   

169、border        
      The border between two countries or regions is the dividing line between them. Sometimes the border also refers to the land close to this line.
   

170、border on            
    If you talk about a characteristic or situation bordering on something, usually something that you consider bad, you mean that it is almost that thing.