形容词
中文翻译：无能的
同义词：
['unfit', 'incapable', 'unqualified']
例句：
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1.The manager was incompetent at handling the situation.
经理在处理这种情况时显得无能。
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2.The teacher was incompetent and failed to explain the concept clearly.
老师不称职，没有清楚地解释这个概念。
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3. The candidate was incompetent in both English and mathematics.
候选人在英语和数学方面都不称职。