The cleavage and schistosity acted as an axial plane role in the early generation of compressed shear fold, and changed into a slip plane in the later generation of flexural slipfold.
片理（劈理）为早世代挤压-剪切褶皱的轴面片理，又成为晚世代弯滑褶皱的滑动面；
2
Buy some fold-up flatties (jewelled, preferably) that can slip into a bag so that you have no excuse not to wear a pair of heels now and again.
买几双能放进包里的折叠平底鞋(最好是宝石的)，这样你就没有理由天天穿着一双高跟鞋了。
3
If it's a squeeze to slip the cardboard inside, fold it a bit. Don't worry, it will flatten out and will still be supportive.