一句话一个克林斯字典基本单词B

1、B, b         
    B is the second letter of the English alphabet.
   

2、baby         
        A baby is a very young child, especially one that cannot yet walk or talk.
   

3、back 1  adverb uses        
       In addition to the uses shown below, back is also used in phrasal verbs such as `date back' and `fall back on'.
 
    If you move back, you move in the opposite direction to the one in which you are facing or in which you were moving before.
      

4、back 2  opposite of front; noun and adjective uses        
      A person's or animal's back is the part of their body between their head and their legs that is on the opposite side to their chest and stomach.
   

5、back 3  verb uses        
      If a building backs onto something, the back of it faces in the direction of that thing or touches the edge of that thing.
    

6、back away            
        If you back away from a commitment that you made or something that you were involved with in the past, you try to show that you are no longer committed to it or involved with it.
      

7、back down            
        If you back down, you withdraw a claim, demand, or commitment that you made earlier, because other people are strongly opposed to it.
    

8、back off            
      If you back off, you move away in order to avoid problems or a fight.
   

9、back out            
        If you back out, you decide not to do something that you previously agreed to do.
    

10、back up            
      If someone or something backs up a statement, they supply evidence to suggest that it is true.