为什么披萨不装在圆形纸板盒里呢？这很大程度上是因为披萨产业无意给纸板盒产业_____。纸板盒一般都是有棱角的（比如正方形或长方形），因为这样的盒子可以一次成型，而且也容易堆放整齐。 It’s mostly because the pizza industry doesn’t really care to disrupt the cardboard industry. Cardboard boxes are usually manufactured with edges (i.e. square or rectangular) because they can be made in one piece as well as neatly stacked. 关注我，每天都有新收获ヾ(◍°∇°◍)ﾉﾞ