这辆跑车的功率重量比非常出色，因此加速性能极佳。

The sports car has an excellent ___power-to-weight ratio, giving it superb acceleration.

跑车设计师非常注重提高车辆的功率重量比以增强加速性能。

Sports car designers pay great attention to improving the ___power-to-weight ratio for better acceleration.