自行车的前刹车需要调整一下。

The bicycle's front ___brake needs adjusting.

我的新自行车有非常出色的刹车，适合下坡骑行。

My new bike has excellent ___brakes for downhill riding.

一只狗跑到路上时，我不得不突然刹车。

I had to apply the ___brake suddenly when a dog ran into the road.