形容词
中文翻译：不拘礼节的
同义词：
['impolite', 'rude', 'discourteous']
例句：
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1.He was unceremonious in his manners when he met the guests.
他在迎接客人时举止粗鲁。
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2.The manager's unceremonious behavior caused a lot of trouble for everyone.
经理无礼的行为给每个人带来了很多麻烦。
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3.The guests were surprised by the unceremonious way she treated them.
客人对主人无礼的方式感到惊讶。