stop-and-go       
adjective US uk/ˌstɒp.ənˈɡəʊ/ us/ˌstɑːp.ənˈɡoʊ/
 时行时止的,走走停停的
A stop-and-go activity is one in which there are short periods of movement with regular interruptions.
  stop-and-go traffic on city streets 城市街道上走走停停的车流 
 
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