sap 英 [ sæp ]

n. 半穿甲的(烧结铝粉);the liquid within a plant that carries food to all parts of it;a foolish person;v.to gradually weaken(somebody's strength);

1. Her long illness gradually sapped her strength.
   长期的患病使她的体力渐渐衰竭。
2. The sap flowed out when he broke the stem of the flower.
   他把花茎折断，汁液就流了出来。

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