A usually full-sized scale model of a structure, used for demonstration, study, or testing.
实体模型：一种通常是建筑物的全尺寸模型，用作陈列，研究或试验。
Many programmers view testing as a demonstration that their programs perform properly.
许多程序员把测试视为其程序能够正常运行的展示。
Many programmers view testing as a demonstration that their programs perform properly.
许多程序员把测试视为其程序能够正常运行的展示。
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