名词
中文翻译：脏话
同义词：
['obscenity', 'vulgarity']
例句：
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1.He used an expletive to express his anger.
他用一个脏话来表达他的愤怒。
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2. She was shocked by the expletive he used in front of her.
她对他在面前使用的脏话感到震惊。
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3.The teacher warned us not to use any expletives during class.
老师警告我们不要在课堂上使用任何脏话。