当你踩下油门时，这辆跑车的加速性能令人印象深刻。

The sports car has an impressive ___acceleration when you press the gas pedal.

医生警告他不要滥用快速药物。

The doctor warned him against abusing ___speed.

在加速带上你可以开得更快一些。

You can drive a little faster on the ___speed-up lane.