经常很难预测产品需求的快速波动和为之准备制造系统。
It is often difficult to predict and prepare manufacturing systems for rapid fluctuations in product demand.
所以，他们把样本应用程序分为三个不同的逻辑系统：零售商系统、制造系统和演示系统。
Thus they divided the sample application into three distinct logical systems: the Retailer system, the Manufacturing system, and the Demo system.
遍布人体复杂的淋巴系统能制造和传输淋巴(又称淋巴液)。
This complex system throughout the body makes and transports a protective fluid called lymph.
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