下一小节将介绍如何添加您自己选择的方法来扩展此模块，使这种力量成倍增加，。
The next section will multiply these powers by helping you extend the module by adding methods of your own choosing.
合成产品使证券化系统的风险成倍增加。
Synthetic products multiplied risks in the securitization system.
积雪和灯火管制使汽车行驶异常困难，车祸成倍增加。
The snow and the blackout combined to make motoring perilous; road accidents doubled.
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