一句话一个克林斯字典基本单词A

218、assistance        
    If you give someone assistance, you help them do a job or task by doing part of the work for them.
    

219、assistant        
      Assistant is used in front of titles or jobs to indicate a slightly lower rank. For example, an assistant director is one rank lower than a director in an organization.
    

220、associate        

    If you associate someone or something with another thing, the two are connected in your mind.
    

221、associated        
      If one thing is associated with another, the two things are connected with each other.
   

222、association        
        An association is an official group of people who have the same job, aim, or interest.
    

223、assume        
      If you assume that something is true, you imagine that it is true, sometimes wrongly.
   

224、assumption        
      If you make an assumption that something is true or will happen, you accept that it is true or will happen, often without any real proof.
   

225、assured        
    Someone who is assured is very confident and relaxed.
      

226、at        
   
    You use at to indicate the place or event where something happens or is situated.
      

227、athlete        
      An athlete is a person who does a sport, especially athletics, or track and field events.