a. 鈍的,?無趣的, 呆滯的, 陰暗的vt. 使遲鈍, 使陰暗, 緩和vi. 變遲鈍,?減少醫 遲鈍的, 濁音的經 清淡的
詞型變化：副詞:dully?名詞:dullness?形容詞:dullish?形容詞比較級:duller?最高級:dullest?動詞過去式:dulled?過去分詞:dulled?現在分詞:dulling?第三人稱單數:dulls?
詞意辨析：dull, tedious, monotonous, dreary
英語解釋：動詞 dull:
make dull in appearancebecome dull or lusterless in appearance; lose shine or brightnessdeaden (a sound or noise), especially by wrappingmake numb or insensitivemake dull or bluntbecome less interesting or attractivemake less lively or vigorous形容詞 dull:
lacking in liveliness or animationemitting or reflecting very little lightbeing or made softer or less loud or clearso lacking in interest as to cause mental weariness(of color) very low in saturation; highly dilutednot keenly feltslow to learn or understand; lacking intellectual acuity(of business) not active or brisknot having a sharp edge or pointblunted in responsiveness or sensibility- Willa Cathernot clear and resonant; sounding as if striking with or against something relatively softdarkened with overcast例句：He felt a?dull?ache in his shoulder.This student is very?dull.It's impossible to cut a pineapple with such a?dull?knife.This book is rather?dull.