Dulla杜拉
dulladj.呆滞的;钝的;迟钝的;无趣的;暗的v.变钝;迟钝
dull resonance浊音
dull colouring色彩单调
dull materials呆滞料
dull-lookingn.目光无神
Dull-Cabbage娃娃菜
dull vegetable粗蔬菜
dull resonunce浊响
dull PVC resin消光PVC树脂
dull hard coal无烟煤
dull polishing磨成无光