漢譯英
  1．被發(fā)現(xiàn)____              
  2．被用來于                    
  3．落入____                  
  4．跌倒                  
  5．決定做____                
  6．撞到____                  
  7．敲門____                      
  8．偶然____                      
l. be invented   2. be used for   3. fall into   4. fall down   5. decide to do sth.
6. knock down   7. knock at the door     8. by accident
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