动词
中文翻译：断言
同义词：
['prove', 'affirm', 'affirm', 'assert', 'declare', 'affirm例句：1. He asserted that he had never seen such a thing before.（他断言自己从未见过这样的事情。）']
例句：
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1. He asserted that he had never seen such a thing before.
他断言自己从未见过这样的事情。
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2.The scientist asserted that the theory was correct.
科学家断言这个理论是正确的。
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3. The teacher asserted that the student's answer was incorrect.
老师断言学生的答案是错误的。