词典释义：
lacking interest or excitement
乏味的，单调的，呆板的
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your diet doesn't have to be dull and boring. 你的日常饮食不必单调乏味。
〈古〉 （人）感觉无聊的，无生气的，沮丧的
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she said she wouldn't be dull and lonely. 她说她不会觉得孤独无聊。
lacking brightness, vividness, or sheen
不鲜明的，晦暗的；无光泽的
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his face glowed in the dull lamplight 在幽暗的灯光下他的脸在发亮
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his black hair looked dull. 他的黑头发看上去没有光泽。
(of the weather)overcast; gloomy
（天气）阴沉的；昏暗的
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next morning dawned dull. 第二天破晓时天阴沉沉的。
(of sound)not clear; muffled
（声音）不清晰的，沉闷的
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a dull thud of hooves. 马蹄沉闷的砰砰声。
(of pain)indistinctly felt; not acute
（疼痛）隐隐的，不明显的
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there was a dull pain in his lower jaw. 他的下巴隐隐作痛。
(of an edge or blade)blunt
（刀口）钝的，不锋利的
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when cutting hard rock the edge soon became dull. 切割坚硬的石头时，刀刃很快就变钝了。
(of a person)slow to understand; stupid
（人）愚钝的；愚蠢的，笨的
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the voice of a teacher talking to a rather dull child. 老师和一个笨孩子谈话的声音。
〈古〉 （感觉）迟钝的，不敏感的；麻木的。
(of activity)sluggish, slow-moving
（行动）迟缓的，慢腾腾的
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trading was dull and low in volume. 贸易不活跃，交易量很低。
make or become dull or less intense
（使）变钝；（使）变得迟钝（或不明亮、沉闷）；（使）减轻；（使）削弱
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[with obj.]
time dulls the memory 时间使记忆变得模糊
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[no obj.]
Albert's eyes dulled a little. 艾伯特的眼睛变得有些黯淡。
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as dull as dishwater （或ditchwater ） extremely dull 无聊透顶的，索然无味的 -
dull the edge of cause to be less keenly felt; reduce the intensity or effectiveness of 使减轻；使迟钝；削弱…的强度（或效果）she'd have to find something to dull the edges of the pain. 她不得不找点东西来缓解疼痛
"Old English
