1. A usually green, flattened, lateral structure attached to a stem and functioning as a principal organ of photosynthesis and transpiration in most plants. 
   叶子连接在茎上的结构，通常是绿色、扁平且侧生，在多数植物中是光合作用和呼吸的主要器官
2. Current deposit, current account 
   活期存款
3. Current events; current leaders. 
   时事；现任领导人
4. A current flowing across another current. 
   交叉水流流向与另一水流交叉的水流
5. A minute opening in tissue, as in the skin of an animal, serving as an outlet for perspiration, or in a plant leaf or stem, serving as a means of absorption and transpiration. 
   毛孔组织中的微小开口，如动物皮肤中，主要作为出汗孔，或如植物叶子或根茎中者，主要作为吸收及蒸腾作用的途径

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• 1. 蒸散流
  蒸敌系数 transpiration coefficient...蒸散流 transpiration current...蒸散效率 transpiration efficiency
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