back balance

例句：

1. 1. The car's back balance is perfect for daily driving.
   这辆车的后置平衡系统非常适合日常驾驶。
2. 2.The engineer adjusted the back balance to improve the vehicle's performance.
   工程师调整了后置平衡以提高车辆的性能。
3. 3. The new design of the back balance has made it easier to control the car.
   新设计的后置平衡使得控制汽车变得更加容易。