A mock-up, then, is something you pungle together out of duct tape, chewing gum, paper clips, cardboard, and paint just to test a concept that you don't necessarily want to implement.

模型是用管道粘胶、口香糖、纸夹和油漆等制成的试验品，用于测试那些目前还不想实现的概念。

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Objective to design a new kind of thermocycling and mechanical loading (TCML) chewing simulator and test the chronic fatigue characteristics of dental materials and prosthesis.

目的研制冷热循环机械载荷咀嚼模拟疲劳试验机来人工模拟口腔环境的温度变化和咀嚼负荷，检测口腔材料的疲劳寿命。

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Objective: the objective of this study is to test whether the self-made denture adhesive paste can improve the chewing efficiency of complete denture.

目的：评价强力义齿稳固剂改善总义齿咀嚼效能的能力。

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An especially significant 2011 study, reported on by Live Science, found that chewing gum before taking a test improved performance, but chewing gum throughout the test did not.

FORBES: Chew Yourself a Better Brain