常見(jiàn)例句雙語(yǔ)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(xué)粉劑或噴灑劑，施於植物以使樹(shù)葉提早掉落。 返回 chemical defoliant