When all brakes drag, it may be that the brake pedal does not have sufficient play, so that the piston in the master cylinder does not fully retract.
2
当驾驶员踩下制动踏板时，制动液由于主缸的作用进入轮缸，推动两个活塞向外侧移动。
When brake pedal is pushed by the driver, brake fluid is forced into the brake cylinder by the action at the master cylinder, and the two pistons are forced outward.
3
而始终踩住刹车踏板不放松的正确制动动作是让ABS起作用的关键。
But always trample to put on brakes balance brow the correct arrest motion that don't relax to make ABS risen an acting valve key.
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