苹果树（学名：Malus pumila）：一种果实可食用的落叶小乔木，果实被称为苹果，具有很高的营养价值和药用价值。
The physio-biochemical changes in respiration rate, ethylene production, polyphenol oxidase(PPO) and enzymatic browning of fresh-cut apple(Malus pumila Mill) induced by wounding were investigated.
以鲜切苹果为实验材料，研究了切割伤害诱导呼吸强度、乙烯生成量、酶活性以及酶促褐变的发生及其生理生化变化。
Apples are considered about as wholesomely American as anything can be, but the apple, Malus pumila, seems to have come from central Asia.
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