基本解釋絨羽(動)同根派生 down-feather相關(guān)詞英漢例句In a plumulaceous feather, barb ridges grow straight without any helical movement.在絨羽上，羽枝脊則直直生長，不做螺旋形移動。Common allergens include pollen, animal dander, down feathers, mites, chemicals, and a variety of foods.常見的過敏原包括花粉，動物皮屑，絨羽，螨類，化學(xué)品，以及各種食品。down-feather更多例句