基本解釋化學脫葉劑英漢例句雙語例句Defoliant: Chemical dust or spray applied to plants to cause their leaves to drop off prematurely.落葉劑： 落葉劑是一種化學粉劑或噴灑劑，施於植物以使樹葉提早掉落。chemical defoliant更多例句專業(yè)釋義辳業(yè)科學化學脫葉劑