preservative [prɪˈzɜ:rvətɪv]

例句:

• The wood is treated with preservative to prevent decay.
  这块木头用防腐剂处理过以防止腐烂.
  
• Make sure the panels are treated with a wood preservative.
  确保镶板用木材防腐剂处理过.
  
• New timber should be treated with a preservative.
  新采的圆木应进行防腐处理.
  
• In consumer products, it works as a preservative.
  来自SA
• One can request vaccination without the preservative Thimerosal.
  来自SA
• Vodka, however, is not a very viable preservative.
  来自SA