单词knife-edged
na.: 锐利的网络: 锋利的;极锋利的;极精密的
锋利的,锐利的
hitching up his trousers, carefully, as if afraid of destroying a knife-edged crease.
他坐到一条凳子上,小心地拉起裤子,好象怕把笔挺的裤缝弄坏似地。