3D is English "three?" The abbreviation of "dimension" in Chinese refers to three dimensions, three dimensions and three coordinates, that is, length, width and height, which is simply three dimensions!

4D, add a sense of "sound"; 5 days, increase the sense of "sports"; 6 days, increase the "sense of smell"

Car seat cushion 3D means three-dimensional seat cushion, and 5D, 6D, 7D and 8D are people who don't pretend to understand, thinking that more D is good.

Have you ever seen a 4D movie? A car seat cushion can give you this feeling, not to mention a 6D one!

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