名词
中文翻译：Unknown
同义词：
['dummy', 'dummy-up', 'dummy-up model']
例句：
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1.The engineer used a dummy model to test the new design.
工程师使用一个假模型来测试新设计。
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2. The dummy model was made of plastic and could be easily moved around.
这个假模型是用塑料做的，可以很容易地移动。
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3.The dummy model was used as a teaching aid during the presentation.
在演示中，这个假模型被用作教学辅助工具。