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English[en]
A common example of this is having children attempt to fit saucepan lids to saucepans of different sizes, or fitting together different sizes of nuts and bolts.
Chinese[zh]
一个常见的例子是让孩子们尝试将平底锅盖子装到不同尺寸的炖锅上,或者将不同尺寸的螺母和螺栓装配在一起。

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