defoliate的一般过去时怎么拼写？

v.（使）落叶...

defoliate的音标：defoliate的英式发音音标为：[ˌdi:'fəʊlieɪt]defoliate的美式发音音标为：[ˌdi'foʊlieɪt]...

defoliate的现在进行时为：defoliating...

The tree is leafless [ defoliate ] .这棵树 秃 了.Dioxin was the ingredient in Agent Orange, used to defoliate Vietnam.越南战场上用于毁灭林区的“橙剂”，其成分是二氧杂芑。...

defoliate的现在完成时为：defoliated...

defoliate的第三人称单数（三单）为：defoliates...