求翻译：这是高跟鞋历史中最重要的时期。早期的高跟鞋因造鞋技术及用料的限制，鞋跟只能造成漏斗状，即跟部自鞋底开始收窄，到底部再扩大。鞋跟后来虽可发展成笔直，却依然欠缺线条美。直至50年代的钢钉技术改革了高跟鞋，设计师才能设计出现今女士又爱又恨的尖细鞋跟是什么意思？

null

This is a high-heel shoes The most important period in history. Due to the high-heel shoes early footwear manufacturing technology and materials used for restrictions on the heel, can only result, funnel, that is, the same as Department since shoe soles, what Department began to expand narrowed. Alt

This is in the high-heeled shoes history the most important time.Because the early high-heeled shoes make the shoes technology and the needed materials limit, the shoe heel only can create the funnel shape, namely starts with from the shoe sole to squeeze, expands again to the base.Although the shoe

This is the most important periods of high heel history. Early high heel shoe technology and needed materials limit, heel can only cause a funnel, heel shoe sole started narrowing to bottom and then expanded. Heel and later can develop into a straight, but still lacks the line the United States. Unt

This is the high heels of the most important period of history. Early high-heeled shoes because shoe technology and material constraints, can only result in funnel-shaped heel, that is with the Department since the soles began to narrow, in the end the Ministry of further expansion. Although the hee