compound rest bottom

例句：

1. 1.The design of the compound rest bottom is very innovative.
   复合底部的设计非常创新。
2. 2. The company's new product has a compound rest bottom that is more durable than its competitors.
   该公司的新产品有一个复合底部，比竞争对手的更耐用。
3. 3. The engineer designed a compound rest bottom to improve the stability of the vehicle.
   工程师设计了一个复合底部，以提高车辆的稳定性。