motor-vehicle chassis

例句：

1. 1.The new car has a sleek motor-vehicle chassis.
   这款新车拥有流线型的汽车底盘。
2. 2. The engineer spent hours modifying the motor-vehicle chassis to improve performance.
   工程师花费了数小时对汽车底盘进行修改，以提升性能。
3. 3. The car's chassis is made from high-quality steel, ensuring durability and safety.
   这款车的底盘由高质量的钢材制成，确保耐用性和安全性。