plastic set

例句：

1. 1. The engineer designed a plastic set to simulate the behavior of an earthquake.
   工程师设计了一个塑料集合体来模拟地震的行为。
2. 2.The team assembled the plastic set before the competition began.
   在比赛开始前，团队组装了塑料集合体。
3. 3. The plastic set was used to demonstrate the principles of fluid dynamics.
   这个塑料集合体被用来演示流体动力学的原理。