Under dynamic environment , the primary learning pattern is the switchover learning , which is achieved through the birth of fresh - enterprise , the exit of draggle enterprise , and the inherent enterprise ' s unlearning 在动态环境下，集群的转换型学习变得重要，其实现技术转换的途径主要是通过新生企业的加入、落后企业的退出以及内部企业本身的“忘却学习” 。
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In the pasted 20 years , the development of the economy has taken out much achievement in chaoshan , but in the nearly years , the external investment not only reduced but also pulled stakes , the development of the economy draggle relatively 近20年来，潮汕地区的经济发展取得了较大的成就，但近年来外投资步伐放慢，甚至撤资迁资，潮汕地区经济发展出现相对落后的现象。
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Third , a lot of retailers have not realized the centralization of purchase and distribution . low productivity , much error and high operation cost are the very common problems in the distribution of retailers . like a bottle neck , the draggle of logistics construction seriously restrict the development of chinese retailing 论文列举了其中主要存在的问题：未能实现集中采购、进货；未能实现统一的存货和库存管理；未能实现统一的运输安排，配送率低；标准化程度低；物流设施落后，物流生产力低；信息化水平低；专业水平低等。
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The preacher , instead of vexing the ears of drowsy farmers on their day of rest at the end of the week ? for sunday is the fit conclusion of an ill - spent week , and not the fresh and brave beginning of a new one ? with this one other draggle - tail of a sermon , should shout with thundering voice , " pause 在周末的休息日里，星期天给难挨的一周一个适当的结局，但并未有焕然一新的开始，代之以传教士在昏昏欲睡的农人们耳边冗长且不堪烦扰的说教，是他雷霆般地叫喊： “停下！
