Living underground can depress production of the chemicals that help dilate and contract the pupil in response to changes in light.

由于长期处于地下，作为对光照减少的反应，帮助瞳孔扩张和收缩的化学物质的产生会相应减少。

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The panels are combined with the internal skeleton layer that has the ability to contract and dilate, thereby giving the vehicle a custom shape.

各小组相结合的内部骨架层，具有扩张和收缩能力，从而使车辆的自定义形状。

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