dieback [da'ɪi:bæk]

例句:

• Cyathula officinalis Dieback mainly damaged the stalks and wattles, also leaves.
  川牛膝枝枯病主要为害枝条和茎, 也可危害叶片.
  
• There may be dieback of the terminal buds.
  顶芽易枯死.
  
• Dieback rate and branching number increased with increasing distance from forest boundaries.
  随远离林缘入侵植株枯梢率增高,分枝数增多.
  
• There is no risk to human or animal health from Chalara ash dieback.
  来自BBC
• It should have been active months ago when ash dieback was first confirmed.
  来自THETIMES
• Symptoms include leaf loss and crown dieback in affected trees, and it can lead to tree death.
  来自BBC