defopation是什么意思音标:英 [ˌdi:ˌfəʊlɪ'eɪʃn]美 [ˌdi:ˌfoʊlɪ'eɪʃn]

n. 落叶

n. the loss of fopage
n. causing the leaves of trees and other plants to fall off (as by the use of chemicals)