这个表示的应该就是一个赌运区的一个非常好的理解
这个的话，你直接在英语字典上搜索一下，不就出来了吗？
dull
常见释义
迟钝的
英:[dʌl]
美:[dʌl]
adj.
枯燥无味的; 无聊的; 令人生厌的; 不明亮的; 不鲜明的; 无光泽的; 不清晰的; 隐约的; 低沉的;
v.
减轻; (使)变麻木; 使迟钝; 使不活泼; (使)变得无光泽，变模糊，变低沉;
例句:
to him and his beautiful, honest, but dull daughter the major is equally suave.
少校对他和他那美丽、忠厚但头脑迟钝的女儿的态度都一样和颜悦色。
汉语翻译a. 钝的, 无趣的, 呆滞的, 阴暗的vt. 使迟钝, 使阴暗, 缓和vi. 变迟钝, 减少【医】 迟钝的, 浊音的【经】 清淡的
词型变化：
副词:dully 名词:dullness 形容词:dullish 形容词比较级:duller 最高级:dullest 动词过去式:dulled 过去分词:dulled 现在分词:dulling 第三人称单数:dulls
词意辨析：
dull, tedious, monotonous, dreary
英语解释：
动词 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
形容词 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 ****cast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.
这是一个物体的一个名字，所以它是一个用英文来代替的一种物体，所以这是一个非常合格的有合格生产证的一个物体。
