defoliant
柯林斯词典
1. N-MASS A defoliant is a chemical used on trees and plants to make all their leaves fall off. Defoliants are especially used in war to remove protection from an enemy. 脱叶剂
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defoliant /diːˈfəʊlɪənt/ (defoliants)
剑桥词典
- a chemical that is used to make the leaves drop off plants
落叶剂，枯叶剂 返回 defoliant