落叶剂是一种工业合成的毒液·作用是杀死植物或使其叶子一夜掉光。落叶剂主要是“橙剂”，其他还有“桔子剂”、“蓝剂”、“梦露绒”等多种，都含有大量的有毒化学物质，其中有一种作用持久的剧毒物二恶英（TCDD）。
n. defoliant
misc. defoliating agent
... 落叶归根 in old age, an expatriate returns home 落叶剂 defoliant 落叶松 larch tree (Pinus larix), deciduous pine tree ...
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落叶剂有时施用于农作物，例如棉花，以便采收。
Defoliants sometimes are applied to crop plants such as cotton to facilitate harvesting.
阿照是家里的独子，因其父曾暴露在落叶剂中，他也受到了影响。
Duat is the only child in his family who was affected by his father’s exposure to Agent Orange during the war.
并且通过对落叶规律的观察统计，筛选出比较理想的悬铃木落叶剂配方。
Through statistical observation of falling leaves, a more ideal formula of the defoliant was developed.
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