Noun:

1. the loss of foliage

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

defabbr.防御（=defense）abbr.延缓的（=deferred）abbr.定义（=definition）abbr.明确的（=definite）Deffez德费

1. The defoliation was buoyed up by a rising air current.
   那片落叶被一股上升的气流浮起。
2. Elaine plucked a twig from the offending japonica and set about its systematic defoliation with savage concentration.
   埃莱恩从难看的山茶上折了个嫩枝，开始猛烈的收集系统的落叶。