名词
中文翻译：示范
同义词：
['exhibition', 'presentation', 'display']
例句：
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1. The teacher demonstrated the new method in class.
老师在课堂上演示了新方法。
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2. The scientist displayed his findings at the international conference.
科学家在国际会议上展示了他的发现。
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3. The engineer demonstrated how to fix the car's engine.
工程师演示了如何修理汽车的引擎。