... 树木嫁接用蜡 Grafting wax for trees 脱叶剂 Defoliants 预防藤蔓病化学品 Vine disease preventing chemicals ...
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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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