If you think about a child's car seat, for example, there's a contoured head and neck support to not only provide that comfort in different positions, but also as a safety factor.

如果你想想儿童的汽车座椅，例如，有一个轮廓的头部和颈部支撑，不仅在不同的位置提供舒适承托，而且还能作为一个安全因素。