defoliant的翻译，读音

词态

例句

defoliant: Chemical dust or spray applied to plants to cause their leaves to drop off prematurely. 落叶剂: 落叶剂是一种化学粉剂或喷洒剂,施于植物以使树叶提早掉落. 。

Since its introduction in agriculture in 1962, paraquat ( PQ ) used as desiccant and defoliant has caused thousands of deaths in humans from both accidental and voluntary exposure. 自1962年百草枯作为干燥剂和落叶剂广泛应用于农业生产，致每年成千上万的人死于百草枯中毒。

Vietnam is beginning a joint operation with the United States to remove traces of the toxic defoliant Agent Orange. 越南开始与美国联合开战清除有毒的橙剂(AgentOrange)污染残留的行动。